Merge branches 'arm/rockchip', 'arm/exynos', 'arm/smmu', 'x86/vt-d', 'x86/amd', ...
[sfrench/cifs-2.6.git] / arch / x86 / kernel / cpu / perf_event_intel.c
1 /*
2  * Per core/cpu state
3  *
4  * Used to coordinate shared registers between HT threads or
5  * among events on a single PMU.
6  */
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include <linux/stddef.h>
11 #include <linux/types.h>
12 #include <linux/init.h>
13 #include <linux/slab.h>
14 #include <linux/export.h>
15 #include <linux/watchdog.h>
16
17 #include <asm/cpufeature.h>
18 #include <asm/hardirq.h>
19 #include <asm/apic.h>
20
21 #include "perf_event.h"
22
23 /*
24  * Intel PerfMon, used on Core and later.
25  */
26 static u64 intel_perfmon_event_map[PERF_COUNT_HW_MAX] __read_mostly =
27 {
28         [PERF_COUNT_HW_CPU_CYCLES]              = 0x003c,
29         [PERF_COUNT_HW_INSTRUCTIONS]            = 0x00c0,
30         [PERF_COUNT_HW_CACHE_REFERENCES]        = 0x4f2e,
31         [PERF_COUNT_HW_CACHE_MISSES]            = 0x412e,
32         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS]     = 0x00c4,
33         [PERF_COUNT_HW_BRANCH_MISSES]           = 0x00c5,
34         [PERF_COUNT_HW_BUS_CYCLES]              = 0x013c,
35         [PERF_COUNT_HW_REF_CPU_CYCLES]          = 0x0300, /* pseudo-encoding */
36 };
37
38 static struct event_constraint intel_core_event_constraints[] __read_mostly =
39 {
40         INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
41         INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
42         INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
43         INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
44         INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
45         INTEL_EVENT_CONSTRAINT(0xc1, 0x1), /* FP_COMP_INSTR_RET */
46         EVENT_CONSTRAINT_END
47 };
48
49 static struct event_constraint intel_core2_event_constraints[] __read_mostly =
50 {
51         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
52         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
53         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
54         INTEL_EVENT_CONSTRAINT(0x10, 0x1), /* FP_COMP_OPS_EXE */
55         INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
56         INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
57         INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
58         INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
59         INTEL_EVENT_CONSTRAINT(0x18, 0x1), /* IDLE_DURING_DIV */
60         INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
61         INTEL_EVENT_CONSTRAINT(0xa1, 0x1), /* RS_UOPS_DISPATCH_CYCLES */
62         INTEL_EVENT_CONSTRAINT(0xc9, 0x1), /* ITLB_MISS_RETIRED (T30-9) */
63         INTEL_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED */
64         EVENT_CONSTRAINT_END
65 };
66
67 static struct event_constraint intel_nehalem_event_constraints[] __read_mostly =
68 {
69         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
70         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
71         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
72         INTEL_EVENT_CONSTRAINT(0x40, 0x3), /* L1D_CACHE_LD */
73         INTEL_EVENT_CONSTRAINT(0x41, 0x3), /* L1D_CACHE_ST */
74         INTEL_EVENT_CONSTRAINT(0x42, 0x3), /* L1D_CACHE_LOCK */
75         INTEL_EVENT_CONSTRAINT(0x43, 0x3), /* L1D_ALL_REF */
76         INTEL_EVENT_CONSTRAINT(0x48, 0x3), /* L1D_PEND_MISS */
77         INTEL_EVENT_CONSTRAINT(0x4e, 0x3), /* L1D_PREFETCH */
78         INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
79         INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
80         EVENT_CONSTRAINT_END
81 };
82
83 static struct extra_reg intel_nehalem_extra_regs[] __read_mostly =
84 {
85         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
86         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
87         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
88         EVENT_EXTRA_END
89 };
90
91 static struct event_constraint intel_westmere_event_constraints[] __read_mostly =
92 {
93         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
94         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
95         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
96         INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
97         INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */
98         INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
99         INTEL_EVENT_CONSTRAINT(0xb3, 0x1), /* SNOOPQ_REQUEST_OUTSTANDING */
100         EVENT_CONSTRAINT_END
101 };
102
103 static struct event_constraint intel_snb_event_constraints[] __read_mostly =
104 {
105         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
106         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
107         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
108         INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
109         INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
110         INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
111         INTEL_UEVENT_CONSTRAINT(0x06a3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
112         INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.PENDING */
113         INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
114         INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
115         INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
116         INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
117
118         INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
119         INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
120         INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
121         INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
122
123         EVENT_CONSTRAINT_END
124 };
125
126 static struct event_constraint intel_ivb_event_constraints[] __read_mostly =
127 {
128         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
129         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
130         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
131         INTEL_UEVENT_CONSTRAINT(0x0148, 0x4), /* L1D_PEND_MISS.PENDING */
132         INTEL_UEVENT_CONSTRAINT(0x0279, 0xf), /* IDQ.EMTPY */
133         INTEL_UEVENT_CONSTRAINT(0x019c, 0xf), /* IDQ_UOPS_NOT_DELIVERED.CORE */
134         INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_LDM_PENDING */
135         INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
136         INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
137         INTEL_UEVENT_CONSTRAINT(0x06a3, 0xf), /* CYCLE_ACTIVITY.STALLS_LDM_PENDING */
138         INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
139         INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
140         INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
141
142         INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
143         INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
144         INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
145         INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
146
147         EVENT_CONSTRAINT_END
148 };
149
150 static struct extra_reg intel_westmere_extra_regs[] __read_mostly =
151 {
152         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
153         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
154         INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0xffff, RSP_1),
155         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
156         EVENT_EXTRA_END
157 };
158
159 static struct event_constraint intel_v1_event_constraints[] __read_mostly =
160 {
161         EVENT_CONSTRAINT_END
162 };
163
164 static struct event_constraint intel_gen_event_constraints[] __read_mostly =
165 {
166         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
167         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
168         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
169         EVENT_CONSTRAINT_END
170 };
171
172 static struct event_constraint intel_slm_event_constraints[] __read_mostly =
173 {
174         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
175         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
176         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* pseudo CPU_CLK_UNHALTED.REF */
177         EVENT_CONSTRAINT_END
178 };
179
180 static struct extra_reg intel_snb_extra_regs[] __read_mostly = {
181         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
182         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3f807f8fffull, RSP_0),
183         INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3f807f8fffull, RSP_1),
184         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
185         EVENT_EXTRA_END
186 };
187
188 static struct extra_reg intel_snbep_extra_regs[] __read_mostly = {
189         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
190         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0),
191         INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1),
192         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
193         EVENT_EXTRA_END
194 };
195
196 EVENT_ATTR_STR(mem-loads,       mem_ld_nhm,     "event=0x0b,umask=0x10,ldlat=3");
197 EVENT_ATTR_STR(mem-loads,       mem_ld_snb,     "event=0xcd,umask=0x1,ldlat=3");
198 EVENT_ATTR_STR(mem-stores,      mem_st_snb,     "event=0xcd,umask=0x2");
199
200 struct attribute *nhm_events_attrs[] = {
201         EVENT_PTR(mem_ld_nhm),
202         NULL,
203 };
204
205 struct attribute *snb_events_attrs[] = {
206         EVENT_PTR(mem_ld_snb),
207         EVENT_PTR(mem_st_snb),
208         NULL,
209 };
210
211 static struct event_constraint intel_hsw_event_constraints[] = {
212         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
213         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
214         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
215         INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.* */
216         INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
217         INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
218         /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
219         INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4),
220         /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
221         INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4),
222         /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
223         INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf),
224
225         INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
226         INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
227         INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
228         INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
229
230         EVENT_CONSTRAINT_END
231 };
232
233 struct event_constraint intel_bdw_event_constraints[] = {
234         FIXED_EVENT_CONSTRAINT(0x00c0, 0),      /* INST_RETIRED.ANY */
235         FIXED_EVENT_CONSTRAINT(0x003c, 1),      /* CPU_CLK_UNHALTED.CORE */
236         FIXED_EVENT_CONSTRAINT(0x0300, 2),      /* CPU_CLK_UNHALTED.REF */
237         INTEL_UEVENT_CONSTRAINT(0x148, 0x4),    /* L1D_PEND_MISS.PENDING */
238         INTEL_EVENT_CONSTRAINT(0xa3, 0x4),      /* CYCLE_ACTIVITY.* */
239         EVENT_CONSTRAINT_END
240 };
241
242 static u64 intel_pmu_event_map(int hw_event)
243 {
244         return intel_perfmon_event_map[hw_event];
245 }
246
247 #define SNB_DMND_DATA_RD        (1ULL << 0)
248 #define SNB_DMND_RFO            (1ULL << 1)
249 #define SNB_DMND_IFETCH         (1ULL << 2)
250 #define SNB_DMND_WB             (1ULL << 3)
251 #define SNB_PF_DATA_RD          (1ULL << 4)
252 #define SNB_PF_RFO              (1ULL << 5)
253 #define SNB_PF_IFETCH           (1ULL << 6)
254 #define SNB_LLC_DATA_RD         (1ULL << 7)
255 #define SNB_LLC_RFO             (1ULL << 8)
256 #define SNB_LLC_IFETCH          (1ULL << 9)
257 #define SNB_BUS_LOCKS           (1ULL << 10)
258 #define SNB_STRM_ST             (1ULL << 11)
259 #define SNB_OTHER               (1ULL << 15)
260 #define SNB_RESP_ANY            (1ULL << 16)
261 #define SNB_NO_SUPP             (1ULL << 17)
262 #define SNB_LLC_HITM            (1ULL << 18)
263 #define SNB_LLC_HITE            (1ULL << 19)
264 #define SNB_LLC_HITS            (1ULL << 20)
265 #define SNB_LLC_HITF            (1ULL << 21)
266 #define SNB_LOCAL               (1ULL << 22)
267 #define SNB_REMOTE              (0xffULL << 23)
268 #define SNB_SNP_NONE            (1ULL << 31)
269 #define SNB_SNP_NOT_NEEDED      (1ULL << 32)
270 #define SNB_SNP_MISS            (1ULL << 33)
271 #define SNB_NO_FWD              (1ULL << 34)
272 #define SNB_SNP_FWD             (1ULL << 35)
273 #define SNB_HITM                (1ULL << 36)
274 #define SNB_NON_DRAM            (1ULL << 37)
275
276 #define SNB_DMND_READ           (SNB_DMND_DATA_RD|SNB_LLC_DATA_RD)
277 #define SNB_DMND_WRITE          (SNB_DMND_RFO|SNB_LLC_RFO)
278 #define SNB_DMND_PREFETCH       (SNB_PF_DATA_RD|SNB_PF_RFO)
279
280 #define SNB_SNP_ANY             (SNB_SNP_NONE|SNB_SNP_NOT_NEEDED| \
281                                  SNB_SNP_MISS|SNB_NO_FWD|SNB_SNP_FWD| \
282                                  SNB_HITM)
283
284 #define SNB_DRAM_ANY            (SNB_LOCAL|SNB_REMOTE|SNB_SNP_ANY)
285 #define SNB_DRAM_REMOTE         (SNB_REMOTE|SNB_SNP_ANY)
286
287 #define SNB_L3_ACCESS           SNB_RESP_ANY
288 #define SNB_L3_MISS             (SNB_DRAM_ANY|SNB_NON_DRAM)
289
290 static __initconst const u64 snb_hw_cache_extra_regs
291                                 [PERF_COUNT_HW_CACHE_MAX]
292                                 [PERF_COUNT_HW_CACHE_OP_MAX]
293                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
294 {
295  [ C(LL  ) ] = {
296         [ C(OP_READ) ] = {
297                 [ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_L3_ACCESS,
298                 [ C(RESULT_MISS)   ] = SNB_DMND_READ|SNB_L3_MISS,
299         },
300         [ C(OP_WRITE) ] = {
301                 [ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_L3_ACCESS,
302                 [ C(RESULT_MISS)   ] = SNB_DMND_WRITE|SNB_L3_MISS,
303         },
304         [ C(OP_PREFETCH) ] = {
305                 [ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_L3_ACCESS,
306                 [ C(RESULT_MISS)   ] = SNB_DMND_PREFETCH|SNB_L3_MISS,
307         },
308  },
309  [ C(NODE) ] = {
310         [ C(OP_READ) ] = {
311                 [ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_DRAM_ANY,
312                 [ C(RESULT_MISS)   ] = SNB_DMND_READ|SNB_DRAM_REMOTE,
313         },
314         [ C(OP_WRITE) ] = {
315                 [ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_DRAM_ANY,
316                 [ C(RESULT_MISS)   ] = SNB_DMND_WRITE|SNB_DRAM_REMOTE,
317         },
318         [ C(OP_PREFETCH) ] = {
319                 [ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_DRAM_ANY,
320                 [ C(RESULT_MISS)   ] = SNB_DMND_PREFETCH|SNB_DRAM_REMOTE,
321         },
322  },
323 };
324
325 static __initconst const u64 snb_hw_cache_event_ids
326                                 [PERF_COUNT_HW_CACHE_MAX]
327                                 [PERF_COUNT_HW_CACHE_OP_MAX]
328                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
329 {
330  [ C(L1D) ] = {
331         [ C(OP_READ) ] = {
332                 [ C(RESULT_ACCESS) ] = 0xf1d0, /* MEM_UOP_RETIRED.LOADS        */
333                 [ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPLACEMENT              */
334         },
335         [ C(OP_WRITE) ] = {
336                 [ C(RESULT_ACCESS) ] = 0xf2d0, /* MEM_UOP_RETIRED.STORES       */
337                 [ C(RESULT_MISS)   ] = 0x0851, /* L1D.ALL_M_REPLACEMENT        */
338         },
339         [ C(OP_PREFETCH) ] = {
340                 [ C(RESULT_ACCESS) ] = 0x0,
341                 [ C(RESULT_MISS)   ] = 0x024e, /* HW_PRE_REQ.DL1_MISS          */
342         },
343  },
344  [ C(L1I ) ] = {
345         [ C(OP_READ) ] = {
346                 [ C(RESULT_ACCESS) ] = 0x0,
347                 [ C(RESULT_MISS)   ] = 0x0280, /* ICACHE.MISSES */
348         },
349         [ C(OP_WRITE) ] = {
350                 [ C(RESULT_ACCESS) ] = -1,
351                 [ C(RESULT_MISS)   ] = -1,
352         },
353         [ C(OP_PREFETCH) ] = {
354                 [ C(RESULT_ACCESS) ] = 0x0,
355                 [ C(RESULT_MISS)   ] = 0x0,
356         },
357  },
358  [ C(LL  ) ] = {
359         [ C(OP_READ) ] = {
360                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
361                 [ C(RESULT_ACCESS) ] = 0x01b7,
362                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
363                 [ C(RESULT_MISS)   ] = 0x01b7,
364         },
365         [ C(OP_WRITE) ] = {
366                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
367                 [ C(RESULT_ACCESS) ] = 0x01b7,
368                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
369                 [ C(RESULT_MISS)   ] = 0x01b7,
370         },
371         [ C(OP_PREFETCH) ] = {
372                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
373                 [ C(RESULT_ACCESS) ] = 0x01b7,
374                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
375                 [ C(RESULT_MISS)   ] = 0x01b7,
376         },
377  },
378  [ C(DTLB) ] = {
379         [ C(OP_READ) ] = {
380                 [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOP_RETIRED.ALL_LOADS */
381                 [ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.CAUSES_A_WALK */
382         },
383         [ C(OP_WRITE) ] = {
384                 [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOP_RETIRED.ALL_STORES */
385                 [ C(RESULT_MISS)   ] = 0x0149, /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
386         },
387         [ C(OP_PREFETCH) ] = {
388                 [ C(RESULT_ACCESS) ] = 0x0,
389                 [ C(RESULT_MISS)   ] = 0x0,
390         },
391  },
392  [ C(ITLB) ] = {
393         [ C(OP_READ) ] = {
394                 [ C(RESULT_ACCESS) ] = 0x1085, /* ITLB_MISSES.STLB_HIT         */
395                 [ C(RESULT_MISS)   ] = 0x0185, /* ITLB_MISSES.CAUSES_A_WALK    */
396         },
397         [ C(OP_WRITE) ] = {
398                 [ C(RESULT_ACCESS) ] = -1,
399                 [ C(RESULT_MISS)   ] = -1,
400         },
401         [ C(OP_PREFETCH) ] = {
402                 [ C(RESULT_ACCESS) ] = -1,
403                 [ C(RESULT_MISS)   ] = -1,
404         },
405  },
406  [ C(BPU ) ] = {
407         [ C(OP_READ) ] = {
408                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
409                 [ C(RESULT_MISS)   ] = 0x00c5, /* BR_MISP_RETIRED.ALL_BRANCHES */
410         },
411         [ C(OP_WRITE) ] = {
412                 [ C(RESULT_ACCESS) ] = -1,
413                 [ C(RESULT_MISS)   ] = -1,
414         },
415         [ C(OP_PREFETCH) ] = {
416                 [ C(RESULT_ACCESS) ] = -1,
417                 [ C(RESULT_MISS)   ] = -1,
418         },
419  },
420  [ C(NODE) ] = {
421         [ C(OP_READ) ] = {
422                 [ C(RESULT_ACCESS) ] = 0x01b7,
423                 [ C(RESULT_MISS)   ] = 0x01b7,
424         },
425         [ C(OP_WRITE) ] = {
426                 [ C(RESULT_ACCESS) ] = 0x01b7,
427                 [ C(RESULT_MISS)   ] = 0x01b7,
428         },
429         [ C(OP_PREFETCH) ] = {
430                 [ C(RESULT_ACCESS) ] = 0x01b7,
431                 [ C(RESULT_MISS)   ] = 0x01b7,
432         },
433  },
434
435 };
436
437 /*
438  * Notes on the events:
439  * - data reads do not include code reads (comparable to earlier tables)
440  * - data counts include speculative execution (except L1 write, dtlb, bpu)
441  * - remote node access includes remote memory, remote cache, remote mmio.
442  * - prefetches are not included in the counts because they are not
443  *   reliably counted.
444  */
445
446 #define HSW_DEMAND_DATA_RD              BIT_ULL(0)
447 #define HSW_DEMAND_RFO                  BIT_ULL(1)
448 #define HSW_ANY_RESPONSE                BIT_ULL(16)
449 #define HSW_SUPPLIER_NONE               BIT_ULL(17)
450 #define HSW_L3_MISS_LOCAL_DRAM          BIT_ULL(22)
451 #define HSW_L3_MISS_REMOTE_HOP0         BIT_ULL(27)
452 #define HSW_L3_MISS_REMOTE_HOP1         BIT_ULL(28)
453 #define HSW_L3_MISS_REMOTE_HOP2P        BIT_ULL(29)
454 #define HSW_L3_MISS                     (HSW_L3_MISS_LOCAL_DRAM| \
455                                          HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
456                                          HSW_L3_MISS_REMOTE_HOP2P)
457 #define HSW_SNOOP_NONE                  BIT_ULL(31)
458 #define HSW_SNOOP_NOT_NEEDED            BIT_ULL(32)
459 #define HSW_SNOOP_MISS                  BIT_ULL(33)
460 #define HSW_SNOOP_HIT_NO_FWD            BIT_ULL(34)
461 #define HSW_SNOOP_HIT_WITH_FWD          BIT_ULL(35)
462 #define HSW_SNOOP_HITM                  BIT_ULL(36)
463 #define HSW_SNOOP_NON_DRAM              BIT_ULL(37)
464 #define HSW_ANY_SNOOP                   (HSW_SNOOP_NONE| \
465                                          HSW_SNOOP_NOT_NEEDED|HSW_SNOOP_MISS| \
466                                          HSW_SNOOP_HIT_NO_FWD|HSW_SNOOP_HIT_WITH_FWD| \
467                                          HSW_SNOOP_HITM|HSW_SNOOP_NON_DRAM)
468 #define HSW_SNOOP_DRAM                  (HSW_ANY_SNOOP & ~HSW_SNOOP_NON_DRAM)
469 #define HSW_DEMAND_READ                 HSW_DEMAND_DATA_RD
470 #define HSW_DEMAND_WRITE                HSW_DEMAND_RFO
471 #define HSW_L3_MISS_REMOTE              (HSW_L3_MISS_REMOTE_HOP0|\
472                                          HSW_L3_MISS_REMOTE_HOP1|HSW_L3_MISS_REMOTE_HOP2P)
473 #define HSW_LLC_ACCESS                  HSW_ANY_RESPONSE
474
475 #define BDW_L3_MISS_LOCAL               BIT(26)
476 #define BDW_L3_MISS                     (BDW_L3_MISS_LOCAL| \
477                                          HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
478                                          HSW_L3_MISS_REMOTE_HOP2P)
479
480
481 static __initconst const u64 hsw_hw_cache_event_ids
482                                 [PERF_COUNT_HW_CACHE_MAX]
483                                 [PERF_COUNT_HW_CACHE_OP_MAX]
484                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
485 {
486  [ C(L1D ) ] = {
487         [ C(OP_READ) ] = {
488                 [ C(RESULT_ACCESS) ] = 0x81d0,  /* MEM_UOPS_RETIRED.ALL_LOADS */
489                 [ C(RESULT_MISS)   ] = 0x151,   /* L1D.REPLACEMENT */
490         },
491         [ C(OP_WRITE) ] = {
492                 [ C(RESULT_ACCESS) ] = 0x82d0,  /* MEM_UOPS_RETIRED.ALL_STORES */
493                 [ C(RESULT_MISS)   ] = 0x0,
494         },
495         [ C(OP_PREFETCH) ] = {
496                 [ C(RESULT_ACCESS) ] = 0x0,
497                 [ C(RESULT_MISS)   ] = 0x0,
498         },
499  },
500  [ C(L1I ) ] = {
501         [ C(OP_READ) ] = {
502                 [ C(RESULT_ACCESS) ] = 0x0,
503                 [ C(RESULT_MISS)   ] = 0x280,   /* ICACHE.MISSES */
504         },
505         [ C(OP_WRITE) ] = {
506                 [ C(RESULT_ACCESS) ] = -1,
507                 [ C(RESULT_MISS)   ] = -1,
508         },
509         [ C(OP_PREFETCH) ] = {
510                 [ C(RESULT_ACCESS) ] = 0x0,
511                 [ C(RESULT_MISS)   ] = 0x0,
512         },
513  },
514  [ C(LL  ) ] = {
515         [ C(OP_READ) ] = {
516                 [ C(RESULT_ACCESS) ] = 0x1b7,   /* OFFCORE_RESPONSE */
517                 [ C(RESULT_MISS)   ] = 0x1b7,   /* OFFCORE_RESPONSE */
518         },
519         [ C(OP_WRITE) ] = {
520                 [ C(RESULT_ACCESS) ] = 0x1b7,   /* OFFCORE_RESPONSE */
521                 [ C(RESULT_MISS)   ] = 0x1b7,   /* OFFCORE_RESPONSE */
522         },
523         [ C(OP_PREFETCH) ] = {
524                 [ C(RESULT_ACCESS) ] = 0x0,
525                 [ C(RESULT_MISS)   ] = 0x0,
526         },
527  },
528  [ C(DTLB) ] = {
529         [ C(OP_READ) ] = {
530                 [ C(RESULT_ACCESS) ] = 0x81d0,  /* MEM_UOPS_RETIRED.ALL_LOADS */
531                 [ C(RESULT_MISS)   ] = 0x108,   /* DTLB_LOAD_MISSES.MISS_CAUSES_A_WALK */
532         },
533         [ C(OP_WRITE) ] = {
534                 [ C(RESULT_ACCESS) ] = 0x82d0,  /* MEM_UOPS_RETIRED.ALL_STORES */
535                 [ C(RESULT_MISS)   ] = 0x149,   /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
536         },
537         [ C(OP_PREFETCH) ] = {
538                 [ C(RESULT_ACCESS) ] = 0x0,
539                 [ C(RESULT_MISS)   ] = 0x0,
540         },
541  },
542  [ C(ITLB) ] = {
543         [ C(OP_READ) ] = {
544                 [ C(RESULT_ACCESS) ] = 0x6085,  /* ITLB_MISSES.STLB_HIT */
545                 [ C(RESULT_MISS)   ] = 0x185,   /* ITLB_MISSES.MISS_CAUSES_A_WALK */
546         },
547         [ C(OP_WRITE) ] = {
548                 [ C(RESULT_ACCESS) ] = -1,
549                 [ C(RESULT_MISS)   ] = -1,
550         },
551         [ C(OP_PREFETCH) ] = {
552                 [ C(RESULT_ACCESS) ] = -1,
553                 [ C(RESULT_MISS)   ] = -1,
554         },
555  },
556  [ C(BPU ) ] = {
557         [ C(OP_READ) ] = {
558                 [ C(RESULT_ACCESS) ] = 0xc4,    /* BR_INST_RETIRED.ALL_BRANCHES */
559                 [ C(RESULT_MISS)   ] = 0xc5,    /* BR_MISP_RETIRED.ALL_BRANCHES */
560         },
561         [ C(OP_WRITE) ] = {
562                 [ C(RESULT_ACCESS) ] = -1,
563                 [ C(RESULT_MISS)   ] = -1,
564         },
565         [ C(OP_PREFETCH) ] = {
566                 [ C(RESULT_ACCESS) ] = -1,
567                 [ C(RESULT_MISS)   ] = -1,
568         },
569  },
570  [ C(NODE) ] = {
571         [ C(OP_READ) ] = {
572                 [ C(RESULT_ACCESS) ] = 0x1b7,   /* OFFCORE_RESPONSE */
573                 [ C(RESULT_MISS)   ] = 0x1b7,   /* OFFCORE_RESPONSE */
574         },
575         [ C(OP_WRITE) ] = {
576                 [ C(RESULT_ACCESS) ] = 0x1b7,   /* OFFCORE_RESPONSE */
577                 [ C(RESULT_MISS)   ] = 0x1b7,   /* OFFCORE_RESPONSE */
578         },
579         [ C(OP_PREFETCH) ] = {
580                 [ C(RESULT_ACCESS) ] = 0x0,
581                 [ C(RESULT_MISS)   ] = 0x0,
582         },
583  },
584 };
585
586 static __initconst const u64 hsw_hw_cache_extra_regs
587                                 [PERF_COUNT_HW_CACHE_MAX]
588                                 [PERF_COUNT_HW_CACHE_OP_MAX]
589                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
590 {
591  [ C(LL  ) ] = {
592         [ C(OP_READ) ] = {
593                 [ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
594                                        HSW_LLC_ACCESS,
595                 [ C(RESULT_MISS)   ] = HSW_DEMAND_READ|
596                                        HSW_L3_MISS|HSW_ANY_SNOOP,
597         },
598         [ C(OP_WRITE) ] = {
599                 [ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
600                                        HSW_LLC_ACCESS,
601                 [ C(RESULT_MISS)   ] = HSW_DEMAND_WRITE|
602                                        HSW_L3_MISS|HSW_ANY_SNOOP,
603         },
604         [ C(OP_PREFETCH) ] = {
605                 [ C(RESULT_ACCESS) ] = 0x0,
606                 [ C(RESULT_MISS)   ] = 0x0,
607         },
608  },
609  [ C(NODE) ] = {
610         [ C(OP_READ) ] = {
611                 [ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
612                                        HSW_L3_MISS_LOCAL_DRAM|
613                                        HSW_SNOOP_DRAM,
614                 [ C(RESULT_MISS)   ] = HSW_DEMAND_READ|
615                                        HSW_L3_MISS_REMOTE|
616                                        HSW_SNOOP_DRAM,
617         },
618         [ C(OP_WRITE) ] = {
619                 [ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
620                                        HSW_L3_MISS_LOCAL_DRAM|
621                                        HSW_SNOOP_DRAM,
622                 [ C(RESULT_MISS)   ] = HSW_DEMAND_WRITE|
623                                        HSW_L3_MISS_REMOTE|
624                                        HSW_SNOOP_DRAM,
625         },
626         [ C(OP_PREFETCH) ] = {
627                 [ C(RESULT_ACCESS) ] = 0x0,
628                 [ C(RESULT_MISS)   ] = 0x0,
629         },
630  },
631 };
632
633 static __initconst const u64 westmere_hw_cache_event_ids
634                                 [PERF_COUNT_HW_CACHE_MAX]
635                                 [PERF_COUNT_HW_CACHE_OP_MAX]
636                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
637 {
638  [ C(L1D) ] = {
639         [ C(OP_READ) ] = {
640                 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
641                 [ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPL                     */
642         },
643         [ C(OP_WRITE) ] = {
644                 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
645                 [ C(RESULT_MISS)   ] = 0x0251, /* L1D.M_REPL                   */
646         },
647         [ C(OP_PREFETCH) ] = {
648                 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS        */
649                 [ C(RESULT_MISS)   ] = 0x024e, /* L1D_PREFETCH.MISS            */
650         },
651  },
652  [ C(L1I ) ] = {
653         [ C(OP_READ) ] = {
654                 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                    */
655                 [ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                   */
656         },
657         [ C(OP_WRITE) ] = {
658                 [ C(RESULT_ACCESS) ] = -1,
659                 [ C(RESULT_MISS)   ] = -1,
660         },
661         [ C(OP_PREFETCH) ] = {
662                 [ C(RESULT_ACCESS) ] = 0x0,
663                 [ C(RESULT_MISS)   ] = 0x0,
664         },
665  },
666  [ C(LL  ) ] = {
667         [ C(OP_READ) ] = {
668                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
669                 [ C(RESULT_ACCESS) ] = 0x01b7,
670                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
671                 [ C(RESULT_MISS)   ] = 0x01b7,
672         },
673         /*
674          * Use RFO, not WRITEBACK, because a write miss would typically occur
675          * on RFO.
676          */
677         [ C(OP_WRITE) ] = {
678                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
679                 [ C(RESULT_ACCESS) ] = 0x01b7,
680                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
681                 [ C(RESULT_MISS)   ] = 0x01b7,
682         },
683         [ C(OP_PREFETCH) ] = {
684                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
685                 [ C(RESULT_ACCESS) ] = 0x01b7,
686                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
687                 [ C(RESULT_MISS)   ] = 0x01b7,
688         },
689  },
690  [ C(DTLB) ] = {
691         [ C(OP_READ) ] = {
692                 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
693                 [ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.ANY         */
694         },
695         [ C(OP_WRITE) ] = {
696                 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
697                 [ C(RESULT_MISS)   ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS  */
698         },
699         [ C(OP_PREFETCH) ] = {
700                 [ C(RESULT_ACCESS) ] = 0x0,
701                 [ C(RESULT_MISS)   ] = 0x0,
702         },
703  },
704  [ C(ITLB) ] = {
705         [ C(OP_READ) ] = {
706                 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P           */
707                 [ C(RESULT_MISS)   ] = 0x0185, /* ITLB_MISSES.ANY              */
708         },
709         [ C(OP_WRITE) ] = {
710                 [ C(RESULT_ACCESS) ] = -1,
711                 [ C(RESULT_MISS)   ] = -1,
712         },
713         [ C(OP_PREFETCH) ] = {
714                 [ C(RESULT_ACCESS) ] = -1,
715                 [ C(RESULT_MISS)   ] = -1,
716         },
717  },
718  [ C(BPU ) ] = {
719         [ C(OP_READ) ] = {
720                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
721                 [ C(RESULT_MISS)   ] = 0x03e8, /* BPU_CLEARS.ANY               */
722         },
723         [ C(OP_WRITE) ] = {
724                 [ C(RESULT_ACCESS) ] = -1,
725                 [ C(RESULT_MISS)   ] = -1,
726         },
727         [ C(OP_PREFETCH) ] = {
728                 [ C(RESULT_ACCESS) ] = -1,
729                 [ C(RESULT_MISS)   ] = -1,
730         },
731  },
732  [ C(NODE) ] = {
733         [ C(OP_READ) ] = {
734                 [ C(RESULT_ACCESS) ] = 0x01b7,
735                 [ C(RESULT_MISS)   ] = 0x01b7,
736         },
737         [ C(OP_WRITE) ] = {
738                 [ C(RESULT_ACCESS) ] = 0x01b7,
739                 [ C(RESULT_MISS)   ] = 0x01b7,
740         },
741         [ C(OP_PREFETCH) ] = {
742                 [ C(RESULT_ACCESS) ] = 0x01b7,
743                 [ C(RESULT_MISS)   ] = 0x01b7,
744         },
745  },
746 };
747
748 /*
749  * Nehalem/Westmere MSR_OFFCORE_RESPONSE bits;
750  * See IA32 SDM Vol 3B 30.6.1.3
751  */
752
753 #define NHM_DMND_DATA_RD        (1 << 0)
754 #define NHM_DMND_RFO            (1 << 1)
755 #define NHM_DMND_IFETCH         (1 << 2)
756 #define NHM_DMND_WB             (1 << 3)
757 #define NHM_PF_DATA_RD          (1 << 4)
758 #define NHM_PF_DATA_RFO         (1 << 5)
759 #define NHM_PF_IFETCH           (1 << 6)
760 #define NHM_OFFCORE_OTHER       (1 << 7)
761 #define NHM_UNCORE_HIT          (1 << 8)
762 #define NHM_OTHER_CORE_HIT_SNP  (1 << 9)
763 #define NHM_OTHER_CORE_HITM     (1 << 10)
764                                 /* reserved */
765 #define NHM_REMOTE_CACHE_FWD    (1 << 12)
766 #define NHM_REMOTE_DRAM         (1 << 13)
767 #define NHM_LOCAL_DRAM          (1 << 14)
768 #define NHM_NON_DRAM            (1 << 15)
769
770 #define NHM_LOCAL               (NHM_LOCAL_DRAM|NHM_REMOTE_CACHE_FWD)
771 #define NHM_REMOTE              (NHM_REMOTE_DRAM)
772
773 #define NHM_DMND_READ           (NHM_DMND_DATA_RD)
774 #define NHM_DMND_WRITE          (NHM_DMND_RFO|NHM_DMND_WB)
775 #define NHM_DMND_PREFETCH       (NHM_PF_DATA_RD|NHM_PF_DATA_RFO)
776
777 #define NHM_L3_HIT      (NHM_UNCORE_HIT|NHM_OTHER_CORE_HIT_SNP|NHM_OTHER_CORE_HITM)
778 #define NHM_L3_MISS     (NHM_NON_DRAM|NHM_LOCAL_DRAM|NHM_REMOTE_DRAM|NHM_REMOTE_CACHE_FWD)
779 #define NHM_L3_ACCESS   (NHM_L3_HIT|NHM_L3_MISS)
780
781 static __initconst const u64 nehalem_hw_cache_extra_regs
782                                 [PERF_COUNT_HW_CACHE_MAX]
783                                 [PERF_COUNT_HW_CACHE_OP_MAX]
784                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
785 {
786  [ C(LL  ) ] = {
787         [ C(OP_READ) ] = {
788                 [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_L3_ACCESS,
789                 [ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_L3_MISS,
790         },
791         [ C(OP_WRITE) ] = {
792                 [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_L3_ACCESS,
793                 [ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_L3_MISS,
794         },
795         [ C(OP_PREFETCH) ] = {
796                 [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_L3_ACCESS,
797                 [ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_L3_MISS,
798         },
799  },
800  [ C(NODE) ] = {
801         [ C(OP_READ) ] = {
802                 [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_LOCAL|NHM_REMOTE,
803                 [ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_REMOTE,
804         },
805         [ C(OP_WRITE) ] = {
806                 [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_LOCAL|NHM_REMOTE,
807                 [ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_REMOTE,
808         },
809         [ C(OP_PREFETCH) ] = {
810                 [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_LOCAL|NHM_REMOTE,
811                 [ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_REMOTE,
812         },
813  },
814 };
815
816 static __initconst const u64 nehalem_hw_cache_event_ids
817                                 [PERF_COUNT_HW_CACHE_MAX]
818                                 [PERF_COUNT_HW_CACHE_OP_MAX]
819                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
820 {
821  [ C(L1D) ] = {
822         [ C(OP_READ) ] = {
823                 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
824                 [ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPL                     */
825         },
826         [ C(OP_WRITE) ] = {
827                 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
828                 [ C(RESULT_MISS)   ] = 0x0251, /* L1D.M_REPL                   */
829         },
830         [ C(OP_PREFETCH) ] = {
831                 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS        */
832                 [ C(RESULT_MISS)   ] = 0x024e, /* L1D_PREFETCH.MISS            */
833         },
834  },
835  [ C(L1I ) ] = {
836         [ C(OP_READ) ] = {
837                 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                    */
838                 [ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                   */
839         },
840         [ C(OP_WRITE) ] = {
841                 [ C(RESULT_ACCESS) ] = -1,
842                 [ C(RESULT_MISS)   ] = -1,
843         },
844         [ C(OP_PREFETCH) ] = {
845                 [ C(RESULT_ACCESS) ] = 0x0,
846                 [ C(RESULT_MISS)   ] = 0x0,
847         },
848  },
849  [ C(LL  ) ] = {
850         [ C(OP_READ) ] = {
851                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
852                 [ C(RESULT_ACCESS) ] = 0x01b7,
853                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
854                 [ C(RESULT_MISS)   ] = 0x01b7,
855         },
856         /*
857          * Use RFO, not WRITEBACK, because a write miss would typically occur
858          * on RFO.
859          */
860         [ C(OP_WRITE) ] = {
861                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
862                 [ C(RESULT_ACCESS) ] = 0x01b7,
863                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
864                 [ C(RESULT_MISS)   ] = 0x01b7,
865         },
866         [ C(OP_PREFETCH) ] = {
867                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
868                 [ C(RESULT_ACCESS) ] = 0x01b7,
869                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
870                 [ C(RESULT_MISS)   ] = 0x01b7,
871         },
872  },
873  [ C(DTLB) ] = {
874         [ C(OP_READ) ] = {
875                 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI   (alias)  */
876                 [ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.ANY         */
877         },
878         [ C(OP_WRITE) ] = {
879                 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI   (alias)  */
880                 [ C(RESULT_MISS)   ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS  */
881         },
882         [ C(OP_PREFETCH) ] = {
883                 [ C(RESULT_ACCESS) ] = 0x0,
884                 [ C(RESULT_MISS)   ] = 0x0,
885         },
886  },
887  [ C(ITLB) ] = {
888         [ C(OP_READ) ] = {
889                 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P           */
890                 [ C(RESULT_MISS)   ] = 0x20c8, /* ITLB_MISS_RETIRED            */
891         },
892         [ C(OP_WRITE) ] = {
893                 [ C(RESULT_ACCESS) ] = -1,
894                 [ C(RESULT_MISS)   ] = -1,
895         },
896         [ C(OP_PREFETCH) ] = {
897                 [ C(RESULT_ACCESS) ] = -1,
898                 [ C(RESULT_MISS)   ] = -1,
899         },
900  },
901  [ C(BPU ) ] = {
902         [ C(OP_READ) ] = {
903                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
904                 [ C(RESULT_MISS)   ] = 0x03e8, /* BPU_CLEARS.ANY               */
905         },
906         [ C(OP_WRITE) ] = {
907                 [ C(RESULT_ACCESS) ] = -1,
908                 [ C(RESULT_MISS)   ] = -1,
909         },
910         [ C(OP_PREFETCH) ] = {
911                 [ C(RESULT_ACCESS) ] = -1,
912                 [ C(RESULT_MISS)   ] = -1,
913         },
914  },
915  [ C(NODE) ] = {
916         [ C(OP_READ) ] = {
917                 [ C(RESULT_ACCESS) ] = 0x01b7,
918                 [ C(RESULT_MISS)   ] = 0x01b7,
919         },
920         [ C(OP_WRITE) ] = {
921                 [ C(RESULT_ACCESS) ] = 0x01b7,
922                 [ C(RESULT_MISS)   ] = 0x01b7,
923         },
924         [ C(OP_PREFETCH) ] = {
925                 [ C(RESULT_ACCESS) ] = 0x01b7,
926                 [ C(RESULT_MISS)   ] = 0x01b7,
927         },
928  },
929 };
930
931 static __initconst const u64 core2_hw_cache_event_ids
932                                 [PERF_COUNT_HW_CACHE_MAX]
933                                 [PERF_COUNT_HW_CACHE_OP_MAX]
934                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
935 {
936  [ C(L1D) ] = {
937         [ C(OP_READ) ] = {
938                 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI          */
939                 [ C(RESULT_MISS)   ] = 0x0140, /* L1D_CACHE_LD.I_STATE       */
940         },
941         [ C(OP_WRITE) ] = {
942                 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI          */
943                 [ C(RESULT_MISS)   ] = 0x0141, /* L1D_CACHE_ST.I_STATE       */
944         },
945         [ C(OP_PREFETCH) ] = {
946                 [ C(RESULT_ACCESS) ] = 0x104e, /* L1D_PREFETCH.REQUESTS      */
947                 [ C(RESULT_MISS)   ] = 0,
948         },
949  },
950  [ C(L1I ) ] = {
951         [ C(OP_READ) ] = {
952                 [ C(RESULT_ACCESS) ] = 0x0080, /* L1I.READS                  */
953                 [ C(RESULT_MISS)   ] = 0x0081, /* L1I.MISSES                 */
954         },
955         [ C(OP_WRITE) ] = {
956                 [ C(RESULT_ACCESS) ] = -1,
957                 [ C(RESULT_MISS)   ] = -1,
958         },
959         [ C(OP_PREFETCH) ] = {
960                 [ C(RESULT_ACCESS) ] = 0,
961                 [ C(RESULT_MISS)   ] = 0,
962         },
963  },
964  [ C(LL  ) ] = {
965         [ C(OP_READ) ] = {
966                 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI                 */
967                 [ C(RESULT_MISS)   ] = 0x4129, /* L2_LD.ISTATE               */
968         },
969         [ C(OP_WRITE) ] = {
970                 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI                 */
971                 [ C(RESULT_MISS)   ] = 0x412A, /* L2_ST.ISTATE               */
972         },
973         [ C(OP_PREFETCH) ] = {
974                 [ C(RESULT_ACCESS) ] = 0,
975                 [ C(RESULT_MISS)   ] = 0,
976         },
977  },
978  [ C(DTLB) ] = {
979         [ C(OP_READ) ] = {
980                 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI  (alias) */
981                 [ C(RESULT_MISS)   ] = 0x0208, /* DTLB_MISSES.MISS_LD        */
982         },
983         [ C(OP_WRITE) ] = {
984                 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI  (alias) */
985                 [ C(RESULT_MISS)   ] = 0x0808, /* DTLB_MISSES.MISS_ST        */
986         },
987         [ C(OP_PREFETCH) ] = {
988                 [ C(RESULT_ACCESS) ] = 0,
989                 [ C(RESULT_MISS)   ] = 0,
990         },
991  },
992  [ C(ITLB) ] = {
993         [ C(OP_READ) ] = {
994                 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P         */
995                 [ C(RESULT_MISS)   ] = 0x1282, /* ITLBMISSES                 */
996         },
997         [ C(OP_WRITE) ] = {
998                 [ C(RESULT_ACCESS) ] = -1,
999                 [ C(RESULT_MISS)   ] = -1,
1000         },
1001         [ C(OP_PREFETCH) ] = {
1002                 [ C(RESULT_ACCESS) ] = -1,
1003                 [ C(RESULT_MISS)   ] = -1,
1004         },
1005  },
1006  [ C(BPU ) ] = {
1007         [ C(OP_READ) ] = {
1008                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY        */
1009                 [ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED    */
1010         },
1011         [ C(OP_WRITE) ] = {
1012                 [ C(RESULT_ACCESS) ] = -1,
1013                 [ C(RESULT_MISS)   ] = -1,
1014         },
1015         [ C(OP_PREFETCH) ] = {
1016                 [ C(RESULT_ACCESS) ] = -1,
1017                 [ C(RESULT_MISS)   ] = -1,
1018         },
1019  },
1020 };
1021
1022 static __initconst const u64 atom_hw_cache_event_ids
1023                                 [PERF_COUNT_HW_CACHE_MAX]
1024                                 [PERF_COUNT_HW_CACHE_OP_MAX]
1025                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1026 {
1027  [ C(L1D) ] = {
1028         [ C(OP_READ) ] = {
1029                 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE.LD               */
1030                 [ C(RESULT_MISS)   ] = 0,
1031         },
1032         [ C(OP_WRITE) ] = {
1033                 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE.ST               */
1034                 [ C(RESULT_MISS)   ] = 0,
1035         },
1036         [ C(OP_PREFETCH) ] = {
1037                 [ C(RESULT_ACCESS) ] = 0x0,
1038                 [ C(RESULT_MISS)   ] = 0,
1039         },
1040  },
1041  [ C(L1I ) ] = {
1042         [ C(OP_READ) ] = {
1043                 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                  */
1044                 [ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                 */
1045         },
1046         [ C(OP_WRITE) ] = {
1047                 [ C(RESULT_ACCESS) ] = -1,
1048                 [ C(RESULT_MISS)   ] = -1,
1049         },
1050         [ C(OP_PREFETCH) ] = {
1051                 [ C(RESULT_ACCESS) ] = 0,
1052                 [ C(RESULT_MISS)   ] = 0,
1053         },
1054  },
1055  [ C(LL  ) ] = {
1056         [ C(OP_READ) ] = {
1057                 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI                 */
1058                 [ C(RESULT_MISS)   ] = 0x4129, /* L2_LD.ISTATE               */
1059         },
1060         [ C(OP_WRITE) ] = {
1061                 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI                 */
1062                 [ C(RESULT_MISS)   ] = 0x412A, /* L2_ST.ISTATE               */
1063         },
1064         [ C(OP_PREFETCH) ] = {
1065                 [ C(RESULT_ACCESS) ] = 0,
1066                 [ C(RESULT_MISS)   ] = 0,
1067         },
1068  },
1069  [ C(DTLB) ] = {
1070         [ C(OP_READ) ] = {
1071                 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE_LD.MESI  (alias) */
1072                 [ C(RESULT_MISS)   ] = 0x0508, /* DTLB_MISSES.MISS_LD        */
1073         },
1074         [ C(OP_WRITE) ] = {
1075                 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE_ST.MESI  (alias) */
1076                 [ C(RESULT_MISS)   ] = 0x0608, /* DTLB_MISSES.MISS_ST        */
1077         },
1078         [ C(OP_PREFETCH) ] = {
1079                 [ C(RESULT_ACCESS) ] = 0,
1080                 [ C(RESULT_MISS)   ] = 0,
1081         },
1082  },
1083  [ C(ITLB) ] = {
1084         [ C(OP_READ) ] = {
1085                 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P         */
1086                 [ C(RESULT_MISS)   ] = 0x0282, /* ITLB.MISSES                */
1087         },
1088         [ C(OP_WRITE) ] = {
1089                 [ C(RESULT_ACCESS) ] = -1,
1090                 [ C(RESULT_MISS)   ] = -1,
1091         },
1092         [ C(OP_PREFETCH) ] = {
1093                 [ C(RESULT_ACCESS) ] = -1,
1094                 [ C(RESULT_MISS)   ] = -1,
1095         },
1096  },
1097  [ C(BPU ) ] = {
1098         [ C(OP_READ) ] = {
1099                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY        */
1100                 [ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED    */
1101         },
1102         [ C(OP_WRITE) ] = {
1103                 [ C(RESULT_ACCESS) ] = -1,
1104                 [ C(RESULT_MISS)   ] = -1,
1105         },
1106         [ C(OP_PREFETCH) ] = {
1107                 [ C(RESULT_ACCESS) ] = -1,
1108                 [ C(RESULT_MISS)   ] = -1,
1109         },
1110  },
1111 };
1112
1113 static struct extra_reg intel_slm_extra_regs[] __read_mostly =
1114 {
1115         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
1116         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x768005ffffull, RSP_0),
1117         INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x768005ffffull, RSP_1),
1118         EVENT_EXTRA_END
1119 };
1120
1121 #define SLM_DMND_READ           SNB_DMND_DATA_RD
1122 #define SLM_DMND_WRITE          SNB_DMND_RFO
1123 #define SLM_DMND_PREFETCH       (SNB_PF_DATA_RD|SNB_PF_RFO)
1124
1125 #define SLM_SNP_ANY             (SNB_SNP_NONE|SNB_SNP_MISS|SNB_NO_FWD|SNB_HITM)
1126 #define SLM_LLC_ACCESS          SNB_RESP_ANY
1127 #define SLM_LLC_MISS            (SLM_SNP_ANY|SNB_NON_DRAM)
1128
1129 static __initconst const u64 slm_hw_cache_extra_regs
1130                                 [PERF_COUNT_HW_CACHE_MAX]
1131                                 [PERF_COUNT_HW_CACHE_OP_MAX]
1132                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1133 {
1134  [ C(LL  ) ] = {
1135         [ C(OP_READ) ] = {
1136                 [ C(RESULT_ACCESS) ] = SLM_DMND_READ|SLM_LLC_ACCESS,
1137                 [ C(RESULT_MISS)   ] = 0,
1138         },
1139         [ C(OP_WRITE) ] = {
1140                 [ C(RESULT_ACCESS) ] = SLM_DMND_WRITE|SLM_LLC_ACCESS,
1141                 [ C(RESULT_MISS)   ] = SLM_DMND_WRITE|SLM_LLC_MISS,
1142         },
1143         [ C(OP_PREFETCH) ] = {
1144                 [ C(RESULT_ACCESS) ] = SLM_DMND_PREFETCH|SLM_LLC_ACCESS,
1145                 [ C(RESULT_MISS)   ] = SLM_DMND_PREFETCH|SLM_LLC_MISS,
1146         },
1147  },
1148 };
1149
1150 static __initconst const u64 slm_hw_cache_event_ids
1151                                 [PERF_COUNT_HW_CACHE_MAX]
1152                                 [PERF_COUNT_HW_CACHE_OP_MAX]
1153                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1154 {
1155  [ C(L1D) ] = {
1156         [ C(OP_READ) ] = {
1157                 [ C(RESULT_ACCESS) ] = 0,
1158                 [ C(RESULT_MISS)   ] = 0x0104, /* LD_DCU_MISS */
1159         },
1160         [ C(OP_WRITE) ] = {
1161                 [ C(RESULT_ACCESS) ] = 0,
1162                 [ C(RESULT_MISS)   ] = 0,
1163         },
1164         [ C(OP_PREFETCH) ] = {
1165                 [ C(RESULT_ACCESS) ] = 0,
1166                 [ C(RESULT_MISS)   ] = 0,
1167         },
1168  },
1169  [ C(L1I ) ] = {
1170         [ C(OP_READ) ] = {
1171                 [ C(RESULT_ACCESS) ] = 0x0380, /* ICACHE.ACCESSES */
1172                 [ C(RESULT_MISS)   ] = 0x0280, /* ICACGE.MISSES */
1173         },
1174         [ C(OP_WRITE) ] = {
1175                 [ C(RESULT_ACCESS) ] = -1,
1176                 [ C(RESULT_MISS)   ] = -1,
1177         },
1178         [ C(OP_PREFETCH) ] = {
1179                 [ C(RESULT_ACCESS) ] = 0,
1180                 [ C(RESULT_MISS)   ] = 0,
1181         },
1182  },
1183  [ C(LL  ) ] = {
1184         [ C(OP_READ) ] = {
1185                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
1186                 [ C(RESULT_ACCESS) ] = 0x01b7,
1187                 [ C(RESULT_MISS)   ] = 0,
1188         },
1189         [ C(OP_WRITE) ] = {
1190                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
1191                 [ C(RESULT_ACCESS) ] = 0x01b7,
1192                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
1193                 [ C(RESULT_MISS)   ] = 0x01b7,
1194         },
1195         [ C(OP_PREFETCH) ] = {
1196                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
1197                 [ C(RESULT_ACCESS) ] = 0x01b7,
1198                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
1199                 [ C(RESULT_MISS)   ] = 0x01b7,
1200         },
1201  },
1202  [ C(DTLB) ] = {
1203         [ C(OP_READ) ] = {
1204                 [ C(RESULT_ACCESS) ] = 0,
1205                 [ C(RESULT_MISS)   ] = 0x0804, /* LD_DTLB_MISS */
1206         },
1207         [ C(OP_WRITE) ] = {
1208                 [ C(RESULT_ACCESS) ] = 0,
1209                 [ C(RESULT_MISS)   ] = 0,
1210         },
1211         [ C(OP_PREFETCH) ] = {
1212                 [ C(RESULT_ACCESS) ] = 0,
1213                 [ C(RESULT_MISS)   ] = 0,
1214         },
1215  },
1216  [ C(ITLB) ] = {
1217         [ C(OP_READ) ] = {
1218                 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
1219                 [ C(RESULT_MISS)   ] = 0x40205, /* PAGE_WALKS.I_SIDE_WALKS */
1220         },
1221         [ C(OP_WRITE) ] = {
1222                 [ C(RESULT_ACCESS) ] = -1,
1223                 [ C(RESULT_MISS)   ] = -1,
1224         },
1225         [ C(OP_PREFETCH) ] = {
1226                 [ C(RESULT_ACCESS) ] = -1,
1227                 [ C(RESULT_MISS)   ] = -1,
1228         },
1229  },
1230  [ C(BPU ) ] = {
1231         [ C(OP_READ) ] = {
1232                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
1233                 [ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
1234         },
1235         [ C(OP_WRITE) ] = {
1236                 [ C(RESULT_ACCESS) ] = -1,
1237                 [ C(RESULT_MISS)   ] = -1,
1238         },
1239         [ C(OP_PREFETCH) ] = {
1240                 [ C(RESULT_ACCESS) ] = -1,
1241                 [ C(RESULT_MISS)   ] = -1,
1242         },
1243  },
1244 };
1245
1246 /*
1247  * Use from PMIs where the LBRs are already disabled.
1248  */
1249 static void __intel_pmu_disable_all(void)
1250 {
1251         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1252
1253         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
1254
1255         if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask))
1256                 intel_pmu_disable_bts();
1257         else
1258                 intel_bts_disable_local();
1259
1260         intel_pmu_pebs_disable_all();
1261 }
1262
1263 static void intel_pmu_disable_all(void)
1264 {
1265         __intel_pmu_disable_all();
1266         intel_pmu_lbr_disable_all();
1267 }
1268
1269 static void __intel_pmu_enable_all(int added, bool pmi)
1270 {
1271         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1272
1273         intel_pmu_pebs_enable_all();
1274         intel_pmu_lbr_enable_all(pmi);
1275         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL,
1276                         x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask);
1277
1278         if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
1279                 struct perf_event *event =
1280                         cpuc->events[INTEL_PMC_IDX_FIXED_BTS];
1281
1282                 if (WARN_ON_ONCE(!event))
1283                         return;
1284
1285                 intel_pmu_enable_bts(event->hw.config);
1286         } else
1287                 intel_bts_enable_local();
1288 }
1289
1290 static void intel_pmu_enable_all(int added)
1291 {
1292         __intel_pmu_enable_all(added, false);
1293 }
1294
1295 /*
1296  * Workaround for:
1297  *   Intel Errata AAK100 (model 26)
1298  *   Intel Errata AAP53  (model 30)
1299  *   Intel Errata BD53   (model 44)
1300  *
1301  * The official story:
1302  *   These chips need to be 'reset' when adding counters by programming the
1303  *   magic three (non-counting) events 0x4300B5, 0x4300D2, and 0x4300B1 either
1304  *   in sequence on the same PMC or on different PMCs.
1305  *
1306  * In practise it appears some of these events do in fact count, and
1307  * we need to programm all 4 events.
1308  */
1309 static void intel_pmu_nhm_workaround(void)
1310 {
1311         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1312         static const unsigned long nhm_magic[4] = {
1313                 0x4300B5,
1314                 0x4300D2,
1315                 0x4300B1,
1316                 0x4300B1
1317         };
1318         struct perf_event *event;
1319         int i;
1320
1321         /*
1322          * The Errata requires below steps:
1323          * 1) Clear MSR_IA32_PEBS_ENABLE and MSR_CORE_PERF_GLOBAL_CTRL;
1324          * 2) Configure 4 PERFEVTSELx with the magic events and clear
1325          *    the corresponding PMCx;
1326          * 3) set bit0~bit3 of MSR_CORE_PERF_GLOBAL_CTRL;
1327          * 4) Clear MSR_CORE_PERF_GLOBAL_CTRL;
1328          * 5) Clear 4 pairs of ERFEVTSELx and PMCx;
1329          */
1330
1331         /*
1332          * The real steps we choose are a little different from above.
1333          * A) To reduce MSR operations, we don't run step 1) as they
1334          *    are already cleared before this function is called;
1335          * B) Call x86_perf_event_update to save PMCx before configuring
1336          *    PERFEVTSELx with magic number;
1337          * C) With step 5), we do clear only when the PERFEVTSELx is
1338          *    not used currently.
1339          * D) Call x86_perf_event_set_period to restore PMCx;
1340          */
1341
1342         /* We always operate 4 pairs of PERF Counters */
1343         for (i = 0; i < 4; i++) {
1344                 event = cpuc->events[i];
1345                 if (event)
1346                         x86_perf_event_update(event);
1347         }
1348
1349         for (i = 0; i < 4; i++) {
1350                 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, nhm_magic[i]);
1351                 wrmsrl(MSR_ARCH_PERFMON_PERFCTR0 + i, 0x0);
1352         }
1353
1354         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0xf);
1355         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x0);
1356
1357         for (i = 0; i < 4; i++) {
1358                 event = cpuc->events[i];
1359
1360                 if (event) {
1361                         x86_perf_event_set_period(event);
1362                         __x86_pmu_enable_event(&event->hw,
1363                                         ARCH_PERFMON_EVENTSEL_ENABLE);
1364                 } else
1365                         wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, 0x0);
1366         }
1367 }
1368
1369 static void intel_pmu_nhm_enable_all(int added)
1370 {
1371         if (added)
1372                 intel_pmu_nhm_workaround();
1373         intel_pmu_enable_all(added);
1374 }
1375
1376 static inline u64 intel_pmu_get_status(void)
1377 {
1378         u64 status;
1379
1380         rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status);
1381
1382         return status;
1383 }
1384
1385 static inline void intel_pmu_ack_status(u64 ack)
1386 {
1387         wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack);
1388 }
1389
1390 static void intel_pmu_disable_fixed(struct hw_perf_event *hwc)
1391 {
1392         int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1393         u64 ctrl_val, mask;
1394
1395         mask = 0xfULL << (idx * 4);
1396
1397         rdmsrl(hwc->config_base, ctrl_val);
1398         ctrl_val &= ~mask;
1399         wrmsrl(hwc->config_base, ctrl_val);
1400 }
1401
1402 static inline bool event_is_checkpointed(struct perf_event *event)
1403 {
1404         return (event->hw.config & HSW_IN_TX_CHECKPOINTED) != 0;
1405 }
1406
1407 static void intel_pmu_disable_event(struct perf_event *event)
1408 {
1409         struct hw_perf_event *hwc = &event->hw;
1410         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1411
1412         if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
1413                 intel_pmu_disable_bts();
1414                 intel_pmu_drain_bts_buffer();
1415                 return;
1416         }
1417
1418         cpuc->intel_ctrl_guest_mask &= ~(1ull << hwc->idx);
1419         cpuc->intel_ctrl_host_mask &= ~(1ull << hwc->idx);
1420         cpuc->intel_cp_status &= ~(1ull << hwc->idx);
1421
1422         /*
1423          * must disable before any actual event
1424          * because any event may be combined with LBR
1425          */
1426         if (needs_branch_stack(event))
1427                 intel_pmu_lbr_disable(event);
1428
1429         if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1430                 intel_pmu_disable_fixed(hwc);
1431                 return;
1432         }
1433
1434         x86_pmu_disable_event(event);
1435
1436         if (unlikely(event->attr.precise_ip))
1437                 intel_pmu_pebs_disable(event);
1438 }
1439
1440 static void intel_pmu_enable_fixed(struct hw_perf_event *hwc)
1441 {
1442         int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1443         u64 ctrl_val, bits, mask;
1444
1445         /*
1446          * Enable IRQ generation (0x8),
1447          * and enable ring-3 counting (0x2) and ring-0 counting (0x1)
1448          * if requested:
1449          */
1450         bits = 0x8ULL;
1451         if (hwc->config & ARCH_PERFMON_EVENTSEL_USR)
1452                 bits |= 0x2;
1453         if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
1454                 bits |= 0x1;
1455
1456         /*
1457          * ANY bit is supported in v3 and up
1458          */
1459         if (x86_pmu.version > 2 && hwc->config & ARCH_PERFMON_EVENTSEL_ANY)
1460                 bits |= 0x4;
1461
1462         bits <<= (idx * 4);
1463         mask = 0xfULL << (idx * 4);
1464
1465         rdmsrl(hwc->config_base, ctrl_val);
1466         ctrl_val &= ~mask;
1467         ctrl_val |= bits;
1468         wrmsrl(hwc->config_base, ctrl_val);
1469 }
1470
1471 static void intel_pmu_enable_event(struct perf_event *event)
1472 {
1473         struct hw_perf_event *hwc = &event->hw;
1474         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1475
1476         if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
1477                 if (!__this_cpu_read(cpu_hw_events.enabled))
1478                         return;
1479
1480                 intel_pmu_enable_bts(hwc->config);
1481                 return;
1482         }
1483         /*
1484          * must enabled before any actual event
1485          * because any event may be combined with LBR
1486          */
1487         if (needs_branch_stack(event))
1488                 intel_pmu_lbr_enable(event);
1489
1490         if (event->attr.exclude_host)
1491                 cpuc->intel_ctrl_guest_mask |= (1ull << hwc->idx);
1492         if (event->attr.exclude_guest)
1493                 cpuc->intel_ctrl_host_mask |= (1ull << hwc->idx);
1494
1495         if (unlikely(event_is_checkpointed(event)))
1496                 cpuc->intel_cp_status |= (1ull << hwc->idx);
1497
1498         if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1499                 intel_pmu_enable_fixed(hwc);
1500                 return;
1501         }
1502
1503         if (unlikely(event->attr.precise_ip))
1504                 intel_pmu_pebs_enable(event);
1505
1506         __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
1507 }
1508
1509 /*
1510  * Save and restart an expired event. Called by NMI contexts,
1511  * so it has to be careful about preempting normal event ops:
1512  */
1513 int intel_pmu_save_and_restart(struct perf_event *event)
1514 {
1515         x86_perf_event_update(event);
1516         /*
1517          * For a checkpointed counter always reset back to 0.  This
1518          * avoids a situation where the counter overflows, aborts the
1519          * transaction and is then set back to shortly before the
1520          * overflow, and overflows and aborts again.
1521          */
1522         if (unlikely(event_is_checkpointed(event))) {
1523                 /* No race with NMIs because the counter should not be armed */
1524                 wrmsrl(event->hw.event_base, 0);
1525                 local64_set(&event->hw.prev_count, 0);
1526         }
1527         return x86_perf_event_set_period(event);
1528 }
1529
1530 static void intel_pmu_reset(void)
1531 {
1532         struct debug_store *ds = __this_cpu_read(cpu_hw_events.ds);
1533         unsigned long flags;
1534         int idx;
1535
1536         if (!x86_pmu.num_counters)
1537                 return;
1538
1539         local_irq_save(flags);
1540
1541         pr_info("clearing PMU state on CPU#%d\n", smp_processor_id());
1542
1543         for (idx = 0; idx < x86_pmu.num_counters; idx++) {
1544                 wrmsrl_safe(x86_pmu_config_addr(idx), 0ull);
1545                 wrmsrl_safe(x86_pmu_event_addr(idx),  0ull);
1546         }
1547         for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++)
1548                 wrmsrl_safe(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull);
1549
1550         if (ds)
1551                 ds->bts_index = ds->bts_buffer_base;
1552
1553         /* Ack all overflows and disable fixed counters */
1554         if (x86_pmu.version >= 2) {
1555                 intel_pmu_ack_status(intel_pmu_get_status());
1556                 wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
1557         }
1558
1559         /* Reset LBRs and LBR freezing */
1560         if (x86_pmu.lbr_nr) {
1561                 update_debugctlmsr(get_debugctlmsr() &
1562                         ~(DEBUGCTLMSR_FREEZE_LBRS_ON_PMI|DEBUGCTLMSR_LBR));
1563         }
1564
1565         local_irq_restore(flags);
1566 }
1567
1568 /*
1569  * This handler is triggered by the local APIC, so the APIC IRQ handling
1570  * rules apply:
1571  */
1572 static int intel_pmu_handle_irq(struct pt_regs *regs)
1573 {
1574         struct perf_sample_data data;
1575         struct cpu_hw_events *cpuc;
1576         int bit, loops;
1577         u64 status;
1578         int handled;
1579
1580         cpuc = this_cpu_ptr(&cpu_hw_events);
1581
1582         /*
1583          * No known reason to not always do late ACK,
1584          * but just in case do it opt-in.
1585          */
1586         if (!x86_pmu.late_ack)
1587                 apic_write(APIC_LVTPC, APIC_DM_NMI);
1588         __intel_pmu_disable_all();
1589         handled = intel_pmu_drain_bts_buffer();
1590         handled += intel_bts_interrupt();
1591         status = intel_pmu_get_status();
1592         if (!status)
1593                 goto done;
1594
1595         loops = 0;
1596 again:
1597         intel_pmu_ack_status(status);
1598         if (++loops > 100) {
1599                 static bool warned = false;
1600                 if (!warned) {
1601                         WARN(1, "perfevents: irq loop stuck!\n");
1602                         perf_event_print_debug();
1603                         warned = true;
1604                 }
1605                 intel_pmu_reset();
1606                 goto done;
1607         }
1608
1609         inc_irq_stat(apic_perf_irqs);
1610
1611         intel_pmu_lbr_read();
1612
1613         /*
1614          * CondChgd bit 63 doesn't mean any overflow status. Ignore
1615          * and clear the bit.
1616          */
1617         if (__test_and_clear_bit(63, (unsigned long *)&status)) {
1618                 if (!status)
1619                         goto done;
1620         }
1621
1622         /*
1623          * PEBS overflow sets bit 62 in the global status register
1624          */
1625         if (__test_and_clear_bit(62, (unsigned long *)&status)) {
1626                 handled++;
1627                 x86_pmu.drain_pebs(regs);
1628         }
1629
1630         /*
1631          * Intel PT
1632          */
1633         if (__test_and_clear_bit(55, (unsigned long *)&status)) {
1634                 handled++;
1635                 intel_pt_interrupt();
1636         }
1637
1638         /*
1639          * Checkpointed counters can lead to 'spurious' PMIs because the
1640          * rollback caused by the PMI will have cleared the overflow status
1641          * bit. Therefore always force probe these counters.
1642          */
1643         status |= cpuc->intel_cp_status;
1644
1645         for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
1646                 struct perf_event *event = cpuc->events[bit];
1647
1648                 handled++;
1649
1650                 if (!test_bit(bit, cpuc->active_mask))
1651                         continue;
1652
1653                 if (!intel_pmu_save_and_restart(event))
1654                         continue;
1655
1656                 perf_sample_data_init(&data, 0, event->hw.last_period);
1657
1658                 if (has_branch_stack(event))
1659                         data.br_stack = &cpuc->lbr_stack;
1660
1661                 if (perf_event_overflow(event, &data, regs))
1662                         x86_pmu_stop(event, 0);
1663         }
1664
1665         /*
1666          * Repeat if there is more work to be done:
1667          */
1668         status = intel_pmu_get_status();
1669         if (status)
1670                 goto again;
1671
1672 done:
1673         __intel_pmu_enable_all(0, true);
1674         /*
1675          * Only unmask the NMI after the overflow counters
1676          * have been reset. This avoids spurious NMIs on
1677          * Haswell CPUs.
1678          */
1679         if (x86_pmu.late_ack)
1680                 apic_write(APIC_LVTPC, APIC_DM_NMI);
1681         return handled;
1682 }
1683
1684 static struct event_constraint *
1685 intel_bts_constraints(struct perf_event *event)
1686 {
1687         struct hw_perf_event *hwc = &event->hw;
1688         unsigned int hw_event, bts_event;
1689
1690         if (event->attr.freq)
1691                 return NULL;
1692
1693         hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
1694         bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
1695
1696         if (unlikely(hw_event == bts_event && hwc->sample_period == 1))
1697                 return &bts_constraint;
1698
1699         return NULL;
1700 }
1701
1702 static int intel_alt_er(int idx)
1703 {
1704         if (!(x86_pmu.flags & PMU_FL_HAS_RSP_1))
1705                 return idx;
1706
1707         if (idx == EXTRA_REG_RSP_0)
1708                 return EXTRA_REG_RSP_1;
1709
1710         if (idx == EXTRA_REG_RSP_1)
1711                 return EXTRA_REG_RSP_0;
1712
1713         return idx;
1714 }
1715
1716 static void intel_fixup_er(struct perf_event *event, int idx)
1717 {
1718         event->hw.extra_reg.idx = idx;
1719
1720         if (idx == EXTRA_REG_RSP_0) {
1721                 event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1722                 event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_0].event;
1723                 event->hw.extra_reg.reg = MSR_OFFCORE_RSP_0;
1724         } else if (idx == EXTRA_REG_RSP_1) {
1725                 event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1726                 event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_1].event;
1727                 event->hw.extra_reg.reg = MSR_OFFCORE_RSP_1;
1728         }
1729 }
1730
1731 /*
1732  * manage allocation of shared extra msr for certain events
1733  *
1734  * sharing can be:
1735  * per-cpu: to be shared between the various events on a single PMU
1736  * per-core: per-cpu + shared by HT threads
1737  */
1738 static struct event_constraint *
1739 __intel_shared_reg_get_constraints(struct cpu_hw_events *cpuc,
1740                                    struct perf_event *event,
1741                                    struct hw_perf_event_extra *reg)
1742 {
1743         struct event_constraint *c = &emptyconstraint;
1744         struct er_account *era;
1745         unsigned long flags;
1746         int idx = reg->idx;
1747
1748         /*
1749          * reg->alloc can be set due to existing state, so for fake cpuc we
1750          * need to ignore this, otherwise we might fail to allocate proper fake
1751          * state for this extra reg constraint. Also see the comment below.
1752          */
1753         if (reg->alloc && !cpuc->is_fake)
1754                 return NULL; /* call x86_get_event_constraint() */
1755
1756 again:
1757         era = &cpuc->shared_regs->regs[idx];
1758         /*
1759          * we use spin_lock_irqsave() to avoid lockdep issues when
1760          * passing a fake cpuc
1761          */
1762         raw_spin_lock_irqsave(&era->lock, flags);
1763
1764         if (!atomic_read(&era->ref) || era->config == reg->config) {
1765
1766                 /*
1767                  * If its a fake cpuc -- as per validate_{group,event}() we
1768                  * shouldn't touch event state and we can avoid doing so
1769                  * since both will only call get_event_constraints() once
1770                  * on each event, this avoids the need for reg->alloc.
1771                  *
1772                  * Not doing the ER fixup will only result in era->reg being
1773                  * wrong, but since we won't actually try and program hardware
1774                  * this isn't a problem either.
1775                  */
1776                 if (!cpuc->is_fake) {
1777                         if (idx != reg->idx)
1778                                 intel_fixup_er(event, idx);
1779
1780                         /*
1781                          * x86_schedule_events() can call get_event_constraints()
1782                          * multiple times on events in the case of incremental
1783                          * scheduling(). reg->alloc ensures we only do the ER
1784                          * allocation once.
1785                          */
1786                         reg->alloc = 1;
1787                 }
1788
1789                 /* lock in msr value */
1790                 era->config = reg->config;
1791                 era->reg = reg->reg;
1792
1793                 /* one more user */
1794                 atomic_inc(&era->ref);
1795
1796                 /*
1797                  * need to call x86_get_event_constraint()
1798                  * to check if associated event has constraints
1799                  */
1800                 c = NULL;
1801         } else {
1802                 idx = intel_alt_er(idx);
1803                 if (idx != reg->idx) {
1804                         raw_spin_unlock_irqrestore(&era->lock, flags);
1805                         goto again;
1806                 }
1807         }
1808         raw_spin_unlock_irqrestore(&era->lock, flags);
1809
1810         return c;
1811 }
1812
1813 static void
1814 __intel_shared_reg_put_constraints(struct cpu_hw_events *cpuc,
1815                                    struct hw_perf_event_extra *reg)
1816 {
1817         struct er_account *era;
1818
1819         /*
1820          * Only put constraint if extra reg was actually allocated. Also takes
1821          * care of event which do not use an extra shared reg.
1822          *
1823          * Also, if this is a fake cpuc we shouldn't touch any event state
1824          * (reg->alloc) and we don't care about leaving inconsistent cpuc state
1825          * either since it'll be thrown out.
1826          */
1827         if (!reg->alloc || cpuc->is_fake)
1828                 return;
1829
1830         era = &cpuc->shared_regs->regs[reg->idx];
1831
1832         /* one fewer user */
1833         atomic_dec(&era->ref);
1834
1835         /* allocate again next time */
1836         reg->alloc = 0;
1837 }
1838
1839 static struct event_constraint *
1840 intel_shared_regs_constraints(struct cpu_hw_events *cpuc,
1841                               struct perf_event *event)
1842 {
1843         struct event_constraint *c = NULL, *d;
1844         struct hw_perf_event_extra *xreg, *breg;
1845
1846         xreg = &event->hw.extra_reg;
1847         if (xreg->idx != EXTRA_REG_NONE) {
1848                 c = __intel_shared_reg_get_constraints(cpuc, event, xreg);
1849                 if (c == &emptyconstraint)
1850                         return c;
1851         }
1852         breg = &event->hw.branch_reg;
1853         if (breg->idx != EXTRA_REG_NONE) {
1854                 d = __intel_shared_reg_get_constraints(cpuc, event, breg);
1855                 if (d == &emptyconstraint) {
1856                         __intel_shared_reg_put_constraints(cpuc, xreg);
1857                         c = d;
1858                 }
1859         }
1860         return c;
1861 }
1862
1863 struct event_constraint *
1864 x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
1865                           struct perf_event *event)
1866 {
1867         struct event_constraint *c;
1868
1869         if (x86_pmu.event_constraints) {
1870                 for_each_event_constraint(c, x86_pmu.event_constraints) {
1871                         if ((event->hw.config & c->cmask) == c->code) {
1872                                 event->hw.flags |= c->flags;
1873                                 return c;
1874                         }
1875                 }
1876         }
1877
1878         return &unconstrained;
1879 }
1880
1881 static struct event_constraint *
1882 __intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
1883                             struct perf_event *event)
1884 {
1885         struct event_constraint *c;
1886
1887         c = intel_bts_constraints(event);
1888         if (c)
1889                 return c;
1890
1891         c = intel_shared_regs_constraints(cpuc, event);
1892         if (c)
1893                 return c;
1894
1895         c = intel_pebs_constraints(event);
1896         if (c)
1897                 return c;
1898
1899         return x86_get_event_constraints(cpuc, idx, event);
1900 }
1901
1902 static void
1903 intel_start_scheduling(struct cpu_hw_events *cpuc)
1904 {
1905         struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
1906         struct intel_excl_states *xl, *xlo;
1907         int tid = cpuc->excl_thread_id;
1908         int o_tid = 1 - tid; /* sibling thread */
1909
1910         /*
1911          * nothing needed if in group validation mode
1912          */
1913         if (cpuc->is_fake || !is_ht_workaround_enabled())
1914                 return;
1915
1916         /*
1917          * no exclusion needed
1918          */
1919         if (!excl_cntrs)
1920                 return;
1921
1922         xlo = &excl_cntrs->states[o_tid];
1923         xl = &excl_cntrs->states[tid];
1924
1925         xl->sched_started = true;
1926         /*
1927          * lock shared state until we are done scheduling
1928          * in stop_event_scheduling()
1929          * makes scheduling appear as a transaction
1930          */
1931         WARN_ON_ONCE(!irqs_disabled());
1932         raw_spin_lock(&excl_cntrs->lock);
1933
1934         /*
1935          * save initial state of sibling thread
1936          */
1937         memcpy(xlo->init_state, xlo->state, sizeof(xlo->init_state));
1938 }
1939
1940 static void
1941 intel_stop_scheduling(struct cpu_hw_events *cpuc)
1942 {
1943         struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
1944         struct intel_excl_states *xl, *xlo;
1945         int tid = cpuc->excl_thread_id;
1946         int o_tid = 1 - tid; /* sibling thread */
1947
1948         /*
1949          * nothing needed if in group validation mode
1950          */
1951         if (cpuc->is_fake || !is_ht_workaround_enabled())
1952                 return;
1953         /*
1954          * no exclusion needed
1955          */
1956         if (!excl_cntrs)
1957                 return;
1958
1959         xlo = &excl_cntrs->states[o_tid];
1960         xl = &excl_cntrs->states[tid];
1961
1962         /*
1963          * make new sibling thread state visible
1964          */
1965         memcpy(xlo->state, xlo->init_state, sizeof(xlo->state));
1966
1967         xl->sched_started = false;
1968         /*
1969          * release shared state lock (acquired in intel_start_scheduling())
1970          */
1971         raw_spin_unlock(&excl_cntrs->lock);
1972 }
1973
1974 static struct event_constraint *
1975 intel_get_excl_constraints(struct cpu_hw_events *cpuc, struct perf_event *event,
1976                            int idx, struct event_constraint *c)
1977 {
1978         struct event_constraint *cx;
1979         struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
1980         struct intel_excl_states *xl, *xlo;
1981         int is_excl, i;
1982         int tid = cpuc->excl_thread_id;
1983         int o_tid = 1 - tid; /* alternate */
1984
1985         /*
1986          * validating a group does not require
1987          * enforcing cross-thread  exclusion
1988          */
1989         if (cpuc->is_fake || !is_ht_workaround_enabled())
1990                 return c;
1991
1992         /*
1993          * no exclusion needed
1994          */
1995         if (!excl_cntrs)
1996                 return c;
1997         /*
1998          * event requires exclusive counter access
1999          * across HT threads
2000          */
2001         is_excl = c->flags & PERF_X86_EVENT_EXCL;
2002         if (is_excl && !(event->hw.flags & PERF_X86_EVENT_EXCL_ACCT)) {
2003                 event->hw.flags |= PERF_X86_EVENT_EXCL_ACCT;
2004                 if (!cpuc->n_excl++)
2005                         WRITE_ONCE(excl_cntrs->has_exclusive[tid], 1);
2006         }
2007
2008         /*
2009          * xl = state of current HT
2010          * xlo = state of sibling HT
2011          */
2012         xl = &excl_cntrs->states[tid];
2013         xlo = &excl_cntrs->states[o_tid];
2014
2015         cx = c;
2016
2017         /*
2018          * because we modify the constraint, we need
2019          * to make a copy. Static constraints come
2020          * from static const tables.
2021          *
2022          * only needed when constraint has not yet
2023          * been cloned (marked dynamic)
2024          */
2025         if (!(c->flags & PERF_X86_EVENT_DYNAMIC)) {
2026
2027                 /* sanity check */
2028                 if (idx < 0)
2029                         return &emptyconstraint;
2030
2031                 /*
2032                  * grab pre-allocated constraint entry
2033                  */
2034                 cx = &cpuc->constraint_list[idx];
2035
2036                 /*
2037                  * initialize dynamic constraint
2038                  * with static constraint
2039                  */
2040                 memcpy(cx, c, sizeof(*cx));
2041
2042                 /*
2043                  * mark constraint as dynamic, so we
2044                  * can free it later on
2045                  */
2046                 cx->flags |= PERF_X86_EVENT_DYNAMIC;
2047         }
2048
2049         /*
2050          * From here on, the constraint is dynamic.
2051          * Either it was just allocated above, or it
2052          * was allocated during a earlier invocation
2053          * of this function
2054          */
2055
2056         /*
2057          * Modify static constraint with current dynamic
2058          * state of thread
2059          *
2060          * EXCLUSIVE: sibling counter measuring exclusive event
2061          * SHARED   : sibling counter measuring non-exclusive event
2062          * UNUSED   : sibling counter unused
2063          */
2064         for_each_set_bit(i, cx->idxmsk, X86_PMC_IDX_MAX) {
2065                 /*
2066                  * exclusive event in sibling counter
2067                  * our corresponding counter cannot be used
2068                  * regardless of our event
2069                  */
2070                 if (xl->state[i] == INTEL_EXCL_EXCLUSIVE)
2071                         __clear_bit(i, cx->idxmsk);
2072                 /*
2073                  * if measuring an exclusive event, sibling
2074                  * measuring non-exclusive, then counter cannot
2075                  * be used
2076                  */
2077                 if (is_excl && xl->state[i] == INTEL_EXCL_SHARED)
2078                         __clear_bit(i, cx->idxmsk);
2079         }
2080
2081         /*
2082          * recompute actual bit weight for scheduling algorithm
2083          */
2084         cx->weight = hweight64(cx->idxmsk64);
2085
2086         /*
2087          * if we return an empty mask, then switch
2088          * back to static empty constraint to avoid
2089          * the cost of freeing later on
2090          */
2091         if (cx->weight == 0)
2092                 cx = &emptyconstraint;
2093
2094         return cx;
2095 }
2096
2097 static struct event_constraint *
2098 intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
2099                             struct perf_event *event)
2100 {
2101         struct event_constraint *c1 = cpuc->event_constraint[idx];
2102         struct event_constraint *c2;
2103
2104         /*
2105          * first time only
2106          * - static constraint: no change across incremental scheduling calls
2107          * - dynamic constraint: handled by intel_get_excl_constraints()
2108          */
2109         c2 = __intel_get_event_constraints(cpuc, idx, event);
2110         if (c1 && (c1->flags & PERF_X86_EVENT_DYNAMIC)) {
2111                 bitmap_copy(c1->idxmsk, c2->idxmsk, X86_PMC_IDX_MAX);
2112                 c1->weight = c2->weight;
2113                 c2 = c1;
2114         }
2115
2116         if (cpuc->excl_cntrs)
2117                 return intel_get_excl_constraints(cpuc, event, idx, c2);
2118
2119         return c2;
2120 }
2121
2122 static void intel_put_excl_constraints(struct cpu_hw_events *cpuc,
2123                 struct perf_event *event)
2124 {
2125         struct hw_perf_event *hwc = &event->hw;
2126         struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
2127         struct intel_excl_states *xlo, *xl;
2128         unsigned long flags = 0; /* keep compiler happy */
2129         int tid = cpuc->excl_thread_id;
2130         int o_tid = 1 - tid;
2131
2132         /*
2133          * nothing needed if in group validation mode
2134          */
2135         if (cpuc->is_fake)
2136                 return;
2137
2138         WARN_ON_ONCE(!excl_cntrs);
2139
2140         if (!excl_cntrs)
2141                 return;
2142
2143         xl = &excl_cntrs->states[tid];
2144         xlo = &excl_cntrs->states[o_tid];
2145         if (hwc->flags & PERF_X86_EVENT_EXCL_ACCT) {
2146                 hwc->flags &= ~PERF_X86_EVENT_EXCL_ACCT;
2147                 if (!--cpuc->n_excl)
2148                         WRITE_ONCE(excl_cntrs->has_exclusive[tid], 0);
2149         }
2150
2151         /*
2152          * put_constraint may be called from x86_schedule_events()
2153          * which already has the lock held so here make locking
2154          * conditional
2155          */
2156         if (!xl->sched_started)
2157                 raw_spin_lock_irqsave(&excl_cntrs->lock, flags);
2158
2159         /*
2160          * if event was actually assigned, then mark the
2161          * counter state as unused now
2162          */
2163         if (hwc->idx >= 0)
2164                 xlo->state[hwc->idx] = INTEL_EXCL_UNUSED;
2165
2166         if (!xl->sched_started)
2167                 raw_spin_unlock_irqrestore(&excl_cntrs->lock, flags);
2168 }
2169
2170 static void
2171 intel_put_shared_regs_event_constraints(struct cpu_hw_events *cpuc,
2172                                         struct perf_event *event)
2173 {
2174         struct hw_perf_event_extra *reg;
2175
2176         reg = &event->hw.extra_reg;
2177         if (reg->idx != EXTRA_REG_NONE)
2178                 __intel_shared_reg_put_constraints(cpuc, reg);
2179
2180         reg = &event->hw.branch_reg;
2181         if (reg->idx != EXTRA_REG_NONE)
2182                 __intel_shared_reg_put_constraints(cpuc, reg);
2183 }
2184
2185 static void intel_put_event_constraints(struct cpu_hw_events *cpuc,
2186                                         struct perf_event *event)
2187 {
2188         intel_put_shared_regs_event_constraints(cpuc, event);
2189
2190         /*
2191          * is PMU has exclusive counter restrictions, then
2192          * all events are subject to and must call the
2193          * put_excl_constraints() routine
2194          */
2195         if (cpuc->excl_cntrs)
2196                 intel_put_excl_constraints(cpuc, event);
2197 }
2198
2199 static void intel_commit_scheduling(struct cpu_hw_events *cpuc, int idx, int cntr)
2200 {
2201         struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
2202         struct event_constraint *c = cpuc->event_constraint[idx];
2203         struct intel_excl_states *xlo, *xl;
2204         int tid = cpuc->excl_thread_id;
2205         int o_tid = 1 - tid;
2206         int is_excl;
2207
2208         if (cpuc->is_fake || !c)
2209                 return;
2210
2211         is_excl = c->flags & PERF_X86_EVENT_EXCL;
2212
2213         if (!(c->flags & PERF_X86_EVENT_DYNAMIC))
2214                 return;
2215
2216         WARN_ON_ONCE(!excl_cntrs);
2217
2218         if (!excl_cntrs)
2219                 return;
2220
2221         xl = &excl_cntrs->states[tid];
2222         xlo = &excl_cntrs->states[o_tid];
2223
2224         WARN_ON_ONCE(!raw_spin_is_locked(&excl_cntrs->lock));
2225
2226         if (cntr >= 0) {
2227                 if (is_excl)
2228                         xlo->init_state[cntr] = INTEL_EXCL_EXCLUSIVE;
2229                 else
2230                         xlo->init_state[cntr] = INTEL_EXCL_SHARED;
2231         }
2232 }
2233
2234 static void intel_pebs_aliases_core2(struct perf_event *event)
2235 {
2236         if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
2237                 /*
2238                  * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
2239                  * (0x003c) so that we can use it with PEBS.
2240                  *
2241                  * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
2242                  * PEBS capable. However we can use INST_RETIRED.ANY_P
2243                  * (0x00c0), which is a PEBS capable event, to get the same
2244                  * count.
2245                  *
2246                  * INST_RETIRED.ANY_P counts the number of cycles that retires
2247                  * CNTMASK instructions. By setting CNTMASK to a value (16)
2248                  * larger than the maximum number of instructions that can be
2249                  * retired per cycle (4) and then inverting the condition, we
2250                  * count all cycles that retire 16 or less instructions, which
2251                  * is every cycle.
2252                  *
2253                  * Thereby we gain a PEBS capable cycle counter.
2254                  */
2255                 u64 alt_config = X86_CONFIG(.event=0xc0, .inv=1, .cmask=16);
2256
2257                 alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
2258                 event->hw.config = alt_config;
2259         }
2260 }
2261
2262 static void intel_pebs_aliases_snb(struct perf_event *event)
2263 {
2264         if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
2265                 /*
2266                  * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
2267                  * (0x003c) so that we can use it with PEBS.
2268                  *
2269                  * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
2270                  * PEBS capable. However we can use UOPS_RETIRED.ALL
2271                  * (0x01c2), which is a PEBS capable event, to get the same
2272                  * count.
2273                  *
2274                  * UOPS_RETIRED.ALL counts the number of cycles that retires
2275                  * CNTMASK micro-ops. By setting CNTMASK to a value (16)
2276                  * larger than the maximum number of micro-ops that can be
2277                  * retired per cycle (4) and then inverting the condition, we
2278                  * count all cycles that retire 16 or less micro-ops, which
2279                  * is every cycle.
2280                  *
2281                  * Thereby we gain a PEBS capable cycle counter.
2282                  */
2283                 u64 alt_config = X86_CONFIG(.event=0xc2, .umask=0x01, .inv=1, .cmask=16);
2284
2285                 alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
2286                 event->hw.config = alt_config;
2287         }
2288 }
2289
2290 static int intel_pmu_hw_config(struct perf_event *event)
2291 {
2292         int ret = x86_pmu_hw_config(event);
2293
2294         if (ret)
2295                 return ret;
2296
2297         if (event->attr.precise_ip && x86_pmu.pebs_aliases)
2298                 x86_pmu.pebs_aliases(event);
2299
2300         if (needs_branch_stack(event)) {
2301                 ret = intel_pmu_setup_lbr_filter(event);
2302                 if (ret)
2303                         return ret;
2304
2305                 /*
2306                  * BTS is set up earlier in this path, so don't account twice
2307                  */
2308                 if (!intel_pmu_has_bts(event)) {
2309                         /* disallow lbr if conflicting events are present */
2310                         if (x86_add_exclusive(x86_lbr_exclusive_lbr))
2311                                 return -EBUSY;
2312
2313                         event->destroy = hw_perf_lbr_event_destroy;
2314                 }
2315         }
2316
2317         if (event->attr.type != PERF_TYPE_RAW)
2318                 return 0;
2319
2320         if (!(event->attr.config & ARCH_PERFMON_EVENTSEL_ANY))
2321                 return 0;
2322
2323         if (x86_pmu.version < 3)
2324                 return -EINVAL;
2325
2326         if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
2327                 return -EACCES;
2328
2329         event->hw.config |= ARCH_PERFMON_EVENTSEL_ANY;
2330
2331         return 0;
2332 }
2333
2334 struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
2335 {
2336         if (x86_pmu.guest_get_msrs)
2337                 return x86_pmu.guest_get_msrs(nr);
2338         *nr = 0;
2339         return NULL;
2340 }
2341 EXPORT_SYMBOL_GPL(perf_guest_get_msrs);
2342
2343 static struct perf_guest_switch_msr *intel_guest_get_msrs(int *nr)
2344 {
2345         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2346         struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
2347
2348         arr[0].msr = MSR_CORE_PERF_GLOBAL_CTRL;
2349         arr[0].host = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask;
2350         arr[0].guest = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_host_mask;
2351         /*
2352          * If PMU counter has PEBS enabled it is not enough to disable counter
2353          * on a guest entry since PEBS memory write can overshoot guest entry
2354          * and corrupt guest memory. Disabling PEBS solves the problem.
2355          */
2356         arr[1].msr = MSR_IA32_PEBS_ENABLE;
2357         arr[1].host = cpuc->pebs_enabled;
2358         arr[1].guest = 0;
2359
2360         *nr = 2;
2361         return arr;
2362 }
2363
2364 static struct perf_guest_switch_msr *core_guest_get_msrs(int *nr)
2365 {
2366         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2367         struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
2368         int idx;
2369
2370         for (idx = 0; idx < x86_pmu.num_counters; idx++)  {
2371                 struct perf_event *event = cpuc->events[idx];
2372
2373                 arr[idx].msr = x86_pmu_config_addr(idx);
2374                 arr[idx].host = arr[idx].guest = 0;
2375
2376                 if (!test_bit(idx, cpuc->active_mask))
2377                         continue;
2378
2379                 arr[idx].host = arr[idx].guest =
2380                         event->hw.config | ARCH_PERFMON_EVENTSEL_ENABLE;
2381
2382                 if (event->attr.exclude_host)
2383                         arr[idx].host &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
2384                 else if (event->attr.exclude_guest)
2385                         arr[idx].guest &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
2386         }
2387
2388         *nr = x86_pmu.num_counters;
2389         return arr;
2390 }
2391
2392 static void core_pmu_enable_event(struct perf_event *event)
2393 {
2394         if (!event->attr.exclude_host)
2395                 x86_pmu_enable_event(event);
2396 }
2397
2398 static void core_pmu_enable_all(int added)
2399 {
2400         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2401         int idx;
2402
2403         for (idx = 0; idx < x86_pmu.num_counters; idx++) {
2404                 struct hw_perf_event *hwc = &cpuc->events[idx]->hw;
2405
2406                 if (!test_bit(idx, cpuc->active_mask) ||
2407                                 cpuc->events[idx]->attr.exclude_host)
2408                         continue;
2409
2410                 __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
2411         }
2412 }
2413
2414 static int hsw_hw_config(struct perf_event *event)
2415 {
2416         int ret = intel_pmu_hw_config(event);
2417
2418         if (ret)
2419                 return ret;
2420         if (!boot_cpu_has(X86_FEATURE_RTM) && !boot_cpu_has(X86_FEATURE_HLE))
2421                 return 0;
2422         event->hw.config |= event->attr.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED);
2423
2424         /*
2425          * IN_TX/IN_TX-CP filters are not supported by the Haswell PMU with
2426          * PEBS or in ANY thread mode. Since the results are non-sensical forbid
2427          * this combination.
2428          */
2429         if ((event->hw.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)) &&
2430              ((event->hw.config & ARCH_PERFMON_EVENTSEL_ANY) ||
2431               event->attr.precise_ip > 0))
2432                 return -EOPNOTSUPP;
2433
2434         if (event_is_checkpointed(event)) {
2435                 /*
2436                  * Sampling of checkpointed events can cause situations where
2437                  * the CPU constantly aborts because of a overflow, which is
2438                  * then checkpointed back and ignored. Forbid checkpointing
2439                  * for sampling.
2440                  *
2441                  * But still allow a long sampling period, so that perf stat
2442                  * from KVM works.
2443                  */
2444                 if (event->attr.sample_period > 0 &&
2445                     event->attr.sample_period < 0x7fffffff)
2446                         return -EOPNOTSUPP;
2447         }
2448         return 0;
2449 }
2450
2451 static struct event_constraint counter2_constraint =
2452                         EVENT_CONSTRAINT(0, 0x4, 0);
2453
2454 static struct event_constraint *
2455 hsw_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
2456                           struct perf_event *event)
2457 {
2458         struct event_constraint *c;
2459
2460         c = intel_get_event_constraints(cpuc, idx, event);
2461
2462         /* Handle special quirk on in_tx_checkpointed only in counter 2 */
2463         if (event->hw.config & HSW_IN_TX_CHECKPOINTED) {
2464                 if (c->idxmsk64 & (1U << 2))
2465                         return &counter2_constraint;
2466                 return &emptyconstraint;
2467         }
2468
2469         return c;
2470 }
2471
2472 /*
2473  * Broadwell:
2474  *
2475  * The INST_RETIRED.ALL period always needs to have lowest 6 bits cleared
2476  * (BDM55) and it must not use a period smaller than 100 (BDM11). We combine
2477  * the two to enforce a minimum period of 128 (the smallest value that has bits
2478  * 0-5 cleared and >= 100).
2479  *
2480  * Because of how the code in x86_perf_event_set_period() works, the truncation
2481  * of the lower 6 bits is 'harmless' as we'll occasionally add a longer period
2482  * to make up for the 'lost' events due to carrying the 'error' in period_left.
2483  *
2484  * Therefore the effective (average) period matches the requested period,
2485  * despite coarser hardware granularity.
2486  */
2487 static unsigned bdw_limit_period(struct perf_event *event, unsigned left)
2488 {
2489         if ((event->hw.config & INTEL_ARCH_EVENT_MASK) ==
2490                         X86_CONFIG(.event=0xc0, .umask=0x01)) {
2491                 if (left < 128)
2492                         left = 128;
2493                 left &= ~0x3fu;
2494         }
2495         return left;
2496 }
2497
2498 PMU_FORMAT_ATTR(event,  "config:0-7"    );
2499 PMU_FORMAT_ATTR(umask,  "config:8-15"   );
2500 PMU_FORMAT_ATTR(edge,   "config:18"     );
2501 PMU_FORMAT_ATTR(pc,     "config:19"     );
2502 PMU_FORMAT_ATTR(any,    "config:21"     ); /* v3 + */
2503 PMU_FORMAT_ATTR(inv,    "config:23"     );
2504 PMU_FORMAT_ATTR(cmask,  "config:24-31"  );
2505 PMU_FORMAT_ATTR(in_tx,  "config:32");
2506 PMU_FORMAT_ATTR(in_tx_cp, "config:33");
2507
2508 static struct attribute *intel_arch_formats_attr[] = {
2509         &format_attr_event.attr,
2510         &format_attr_umask.attr,
2511         &format_attr_edge.attr,
2512         &format_attr_pc.attr,
2513         &format_attr_inv.attr,
2514         &format_attr_cmask.attr,
2515         NULL,
2516 };
2517
2518 ssize_t intel_event_sysfs_show(char *page, u64 config)
2519 {
2520         u64 event = (config & ARCH_PERFMON_EVENTSEL_EVENT);
2521
2522         return x86_event_sysfs_show(page, config, event);
2523 }
2524
2525 struct intel_shared_regs *allocate_shared_regs(int cpu)
2526 {
2527         struct intel_shared_regs *regs;
2528         int i;
2529
2530         regs = kzalloc_node(sizeof(struct intel_shared_regs),
2531                             GFP_KERNEL, cpu_to_node(cpu));
2532         if (regs) {
2533                 /*
2534                  * initialize the locks to keep lockdep happy
2535                  */
2536                 for (i = 0; i < EXTRA_REG_MAX; i++)
2537                         raw_spin_lock_init(&regs->regs[i].lock);
2538
2539                 regs->core_id = -1;
2540         }
2541         return regs;
2542 }
2543
2544 static struct intel_excl_cntrs *allocate_excl_cntrs(int cpu)
2545 {
2546         struct intel_excl_cntrs *c;
2547         int i;
2548
2549         c = kzalloc_node(sizeof(struct intel_excl_cntrs),
2550                          GFP_KERNEL, cpu_to_node(cpu));
2551         if (c) {
2552                 raw_spin_lock_init(&c->lock);
2553                 for (i = 0; i < X86_PMC_IDX_MAX; i++) {
2554                         c->states[0].state[i] = INTEL_EXCL_UNUSED;
2555                         c->states[0].init_state[i] = INTEL_EXCL_UNUSED;
2556
2557                         c->states[1].state[i] = INTEL_EXCL_UNUSED;
2558                         c->states[1].init_state[i] = INTEL_EXCL_UNUSED;
2559                 }
2560                 c->core_id = -1;
2561         }
2562         return c;
2563 }
2564
2565 static int intel_pmu_cpu_prepare(int cpu)
2566 {
2567         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2568
2569         if (x86_pmu.extra_regs || x86_pmu.lbr_sel_map) {
2570                 cpuc->shared_regs = allocate_shared_regs(cpu);
2571                 if (!cpuc->shared_regs)
2572                         return NOTIFY_BAD;
2573         }
2574
2575         if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
2576                 size_t sz = X86_PMC_IDX_MAX * sizeof(struct event_constraint);
2577
2578                 cpuc->constraint_list = kzalloc(sz, GFP_KERNEL);
2579                 if (!cpuc->constraint_list)
2580                         return NOTIFY_BAD;
2581
2582                 cpuc->excl_cntrs = allocate_excl_cntrs(cpu);
2583                 if (!cpuc->excl_cntrs) {
2584                         kfree(cpuc->constraint_list);
2585                         kfree(cpuc->shared_regs);
2586                         return NOTIFY_BAD;
2587                 }
2588                 cpuc->excl_thread_id = 0;
2589         }
2590
2591         return NOTIFY_OK;
2592 }
2593
2594 static void intel_pmu_cpu_starting(int cpu)
2595 {
2596         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2597         int core_id = topology_core_id(cpu);
2598         int i;
2599
2600         init_debug_store_on_cpu(cpu);
2601         /*
2602          * Deal with CPUs that don't clear their LBRs on power-up.
2603          */
2604         intel_pmu_lbr_reset();
2605
2606         cpuc->lbr_sel = NULL;
2607
2608         if (!cpuc->shared_regs)
2609                 return;
2610
2611         if (!(x86_pmu.flags & PMU_FL_NO_HT_SHARING)) {
2612                 void **onln = &cpuc->kfree_on_online[X86_PERF_KFREE_SHARED];
2613
2614                 for_each_cpu(i, topology_thread_cpumask(cpu)) {
2615                         struct intel_shared_regs *pc;
2616
2617                         pc = per_cpu(cpu_hw_events, i).shared_regs;
2618                         if (pc && pc->core_id == core_id) {
2619                                 *onln = cpuc->shared_regs;
2620                                 cpuc->shared_regs = pc;
2621                                 break;
2622                         }
2623                 }
2624                 cpuc->shared_regs->core_id = core_id;
2625                 cpuc->shared_regs->refcnt++;
2626         }
2627
2628         if (x86_pmu.lbr_sel_map)
2629                 cpuc->lbr_sel = &cpuc->shared_regs->regs[EXTRA_REG_LBR];
2630
2631         if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
2632                 for_each_cpu(i, topology_thread_cpumask(cpu)) {
2633                         struct intel_excl_cntrs *c;
2634
2635                         c = per_cpu(cpu_hw_events, i).excl_cntrs;
2636                         if (c && c->core_id == core_id) {
2637                                 cpuc->kfree_on_online[1] = cpuc->excl_cntrs;
2638                                 cpuc->excl_cntrs = c;
2639                                 cpuc->excl_thread_id = 1;
2640                                 break;
2641                         }
2642                 }
2643                 cpuc->excl_cntrs->core_id = core_id;
2644                 cpuc->excl_cntrs->refcnt++;
2645         }
2646 }
2647
2648 static void free_excl_cntrs(int cpu)
2649 {
2650         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2651         struct intel_excl_cntrs *c;
2652
2653         c = cpuc->excl_cntrs;
2654         if (c) {
2655                 if (c->core_id == -1 || --c->refcnt == 0)
2656                         kfree(c);
2657                 cpuc->excl_cntrs = NULL;
2658                 kfree(cpuc->constraint_list);
2659                 cpuc->constraint_list = NULL;
2660         }
2661 }
2662
2663 static void intel_pmu_cpu_dying(int cpu)
2664 {
2665         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2666         struct intel_shared_regs *pc;
2667
2668         pc = cpuc->shared_regs;
2669         if (pc) {
2670                 if (pc->core_id == -1 || --pc->refcnt == 0)
2671                         kfree(pc);
2672                 cpuc->shared_regs = NULL;
2673         }
2674
2675         free_excl_cntrs(cpu);
2676
2677         fini_debug_store_on_cpu(cpu);
2678 }
2679
2680 PMU_FORMAT_ATTR(offcore_rsp, "config1:0-63");
2681
2682 PMU_FORMAT_ATTR(ldlat, "config1:0-15");
2683
2684 static struct attribute *intel_arch3_formats_attr[] = {
2685         &format_attr_event.attr,
2686         &format_attr_umask.attr,
2687         &format_attr_edge.attr,
2688         &format_attr_pc.attr,
2689         &format_attr_any.attr,
2690         &format_attr_inv.attr,
2691         &format_attr_cmask.attr,
2692         &format_attr_in_tx.attr,
2693         &format_attr_in_tx_cp.attr,
2694
2695         &format_attr_offcore_rsp.attr, /* XXX do NHM/WSM + SNB breakout */
2696         &format_attr_ldlat.attr, /* PEBS load latency */
2697         NULL,
2698 };
2699
2700 static __initconst const struct x86_pmu core_pmu = {
2701         .name                   = "core",
2702         .handle_irq             = x86_pmu_handle_irq,
2703         .disable_all            = x86_pmu_disable_all,
2704         .enable_all             = core_pmu_enable_all,
2705         .enable                 = core_pmu_enable_event,
2706         .disable                = x86_pmu_disable_event,
2707         .hw_config              = x86_pmu_hw_config,
2708         .schedule_events        = x86_schedule_events,
2709         .eventsel               = MSR_ARCH_PERFMON_EVENTSEL0,
2710         .perfctr                = MSR_ARCH_PERFMON_PERFCTR0,
2711         .event_map              = intel_pmu_event_map,
2712         .max_events             = ARRAY_SIZE(intel_perfmon_event_map),
2713         .apic                   = 1,
2714         /*
2715          * Intel PMCs cannot be accessed sanely above 32-bit width,
2716          * so we install an artificial 1<<31 period regardless of
2717          * the generic event period:
2718          */
2719         .max_period             = (1ULL<<31) - 1,
2720         .get_event_constraints  = intel_get_event_constraints,
2721         .put_event_constraints  = intel_put_event_constraints,
2722         .event_constraints      = intel_core_event_constraints,
2723         .guest_get_msrs         = core_guest_get_msrs,
2724         .format_attrs           = intel_arch_formats_attr,
2725         .events_sysfs_show      = intel_event_sysfs_show,
2726
2727         /*
2728          * Virtual (or funny metal) CPU can define x86_pmu.extra_regs
2729          * together with PMU version 1 and thus be using core_pmu with
2730          * shared_regs. We need following callbacks here to allocate
2731          * it properly.
2732          */
2733         .cpu_prepare            = intel_pmu_cpu_prepare,
2734         .cpu_starting           = intel_pmu_cpu_starting,
2735         .cpu_dying              = intel_pmu_cpu_dying,
2736 };
2737
2738 static __initconst const struct x86_pmu intel_pmu = {
2739         .name                   = "Intel",
2740         .handle_irq             = intel_pmu_handle_irq,
2741         .disable_all            = intel_pmu_disable_all,
2742         .enable_all             = intel_pmu_enable_all,
2743         .enable                 = intel_pmu_enable_event,
2744         .disable                = intel_pmu_disable_event,
2745         .hw_config              = intel_pmu_hw_config,
2746         .schedule_events        = x86_schedule_events,
2747         .eventsel               = MSR_ARCH_PERFMON_EVENTSEL0,
2748         .perfctr                = MSR_ARCH_PERFMON_PERFCTR0,
2749         .event_map              = intel_pmu_event_map,
2750         .max_events             = ARRAY_SIZE(intel_perfmon_event_map),
2751         .apic                   = 1,
2752         /*
2753          * Intel PMCs cannot be accessed sanely above 32 bit width,
2754          * so we install an artificial 1<<31 period regardless of
2755          * the generic event period:
2756          */
2757         .max_period             = (1ULL << 31) - 1,
2758         .get_event_constraints  = intel_get_event_constraints,
2759         .put_event_constraints  = intel_put_event_constraints,
2760         .pebs_aliases           = intel_pebs_aliases_core2,
2761
2762         .format_attrs           = intel_arch3_formats_attr,
2763         .events_sysfs_show      = intel_event_sysfs_show,
2764
2765         .cpu_prepare            = intel_pmu_cpu_prepare,
2766         .cpu_starting           = intel_pmu_cpu_starting,
2767         .cpu_dying              = intel_pmu_cpu_dying,
2768         .guest_get_msrs         = intel_guest_get_msrs,
2769         .sched_task             = intel_pmu_lbr_sched_task,
2770 };
2771
2772 static __init void intel_clovertown_quirk(void)
2773 {
2774         /*
2775          * PEBS is unreliable due to:
2776          *
2777          *   AJ67  - PEBS may experience CPL leaks
2778          *   AJ68  - PEBS PMI may be delayed by one event
2779          *   AJ69  - GLOBAL_STATUS[62] will only be set when DEBUGCTL[12]
2780          *   AJ106 - FREEZE_LBRS_ON_PMI doesn't work in combination with PEBS
2781          *
2782          * AJ67 could be worked around by restricting the OS/USR flags.
2783          * AJ69 could be worked around by setting PMU_FREEZE_ON_PMI.
2784          *
2785          * AJ106 could possibly be worked around by not allowing LBR
2786          *       usage from PEBS, including the fixup.
2787          * AJ68  could possibly be worked around by always programming
2788          *       a pebs_event_reset[0] value and coping with the lost events.
2789          *
2790          * But taken together it might just make sense to not enable PEBS on
2791          * these chips.
2792          */
2793         pr_warn("PEBS disabled due to CPU errata\n");
2794         x86_pmu.pebs = 0;
2795         x86_pmu.pebs_constraints = NULL;
2796 }
2797
2798 static int intel_snb_pebs_broken(int cpu)
2799 {
2800         u32 rev = UINT_MAX; /* default to broken for unknown models */
2801
2802         switch (cpu_data(cpu).x86_model) {
2803         case 42: /* SNB */
2804                 rev = 0x28;
2805                 break;
2806
2807         case 45: /* SNB-EP */
2808                 switch (cpu_data(cpu).x86_mask) {
2809                 case 6: rev = 0x618; break;
2810                 case 7: rev = 0x70c; break;
2811                 }
2812         }
2813
2814         return (cpu_data(cpu).microcode < rev);
2815 }
2816
2817 static void intel_snb_check_microcode(void)
2818 {
2819         int pebs_broken = 0;
2820         int cpu;
2821
2822         get_online_cpus();
2823         for_each_online_cpu(cpu) {
2824                 if ((pebs_broken = intel_snb_pebs_broken(cpu)))
2825                         break;
2826         }
2827         put_online_cpus();
2828
2829         if (pebs_broken == x86_pmu.pebs_broken)
2830                 return;
2831
2832         /*
2833          * Serialized by the microcode lock..
2834          */
2835         if (x86_pmu.pebs_broken) {
2836                 pr_info("PEBS enabled due to microcode update\n");
2837                 x86_pmu.pebs_broken = 0;
2838         } else {
2839                 pr_info("PEBS disabled due to CPU errata, please upgrade microcode\n");
2840                 x86_pmu.pebs_broken = 1;
2841         }
2842 }
2843
2844 /*
2845  * Under certain circumstances, access certain MSR may cause #GP.
2846  * The function tests if the input MSR can be safely accessed.
2847  */
2848 static bool check_msr(unsigned long msr, u64 mask)
2849 {
2850         u64 val_old, val_new, val_tmp;
2851
2852         /*
2853          * Read the current value, change it and read it back to see if it
2854          * matches, this is needed to detect certain hardware emulators
2855          * (qemu/kvm) that don't trap on the MSR access and always return 0s.
2856          */
2857         if (rdmsrl_safe(msr, &val_old))
2858                 return false;
2859
2860         /*
2861          * Only change the bits which can be updated by wrmsrl.
2862          */
2863         val_tmp = val_old ^ mask;
2864         if (wrmsrl_safe(msr, val_tmp) ||
2865             rdmsrl_safe(msr, &val_new))
2866                 return false;
2867
2868         if (val_new != val_tmp)
2869                 return false;
2870
2871         /* Here it's sure that the MSR can be safely accessed.
2872          * Restore the old value and return.
2873          */
2874         wrmsrl(msr, val_old);
2875
2876         return true;
2877 }
2878
2879 static __init void intel_sandybridge_quirk(void)
2880 {
2881         x86_pmu.check_microcode = intel_snb_check_microcode;
2882         intel_snb_check_microcode();
2883 }
2884
2885 static const struct { int id; char *name; } intel_arch_events_map[] __initconst = {
2886         { PERF_COUNT_HW_CPU_CYCLES, "cpu cycles" },
2887         { PERF_COUNT_HW_INSTRUCTIONS, "instructions" },
2888         { PERF_COUNT_HW_BUS_CYCLES, "bus cycles" },
2889         { PERF_COUNT_HW_CACHE_REFERENCES, "cache references" },
2890         { PERF_COUNT_HW_CACHE_MISSES, "cache misses" },
2891         { PERF_COUNT_HW_BRANCH_INSTRUCTIONS, "branch instructions" },
2892         { PERF_COUNT_HW_BRANCH_MISSES, "branch misses" },
2893 };
2894
2895 static __init void intel_arch_events_quirk(void)
2896 {
2897         int bit;
2898
2899         /* disable event that reported as not presend by cpuid */
2900         for_each_set_bit(bit, x86_pmu.events_mask, ARRAY_SIZE(intel_arch_events_map)) {
2901                 intel_perfmon_event_map[intel_arch_events_map[bit].id] = 0;
2902                 pr_warn("CPUID marked event: \'%s\' unavailable\n",
2903                         intel_arch_events_map[bit].name);
2904         }
2905 }
2906
2907 static __init void intel_nehalem_quirk(void)
2908 {
2909         union cpuid10_ebx ebx;
2910
2911         ebx.full = x86_pmu.events_maskl;
2912         if (ebx.split.no_branch_misses_retired) {
2913                 /*
2914                  * Erratum AAJ80 detected, we work it around by using
2915                  * the BR_MISP_EXEC.ANY event. This will over-count
2916                  * branch-misses, but it's still much better than the
2917                  * architectural event which is often completely bogus:
2918                  */
2919                 intel_perfmon_event_map[PERF_COUNT_HW_BRANCH_MISSES] = 0x7f89;
2920                 ebx.split.no_branch_misses_retired = 0;
2921                 x86_pmu.events_maskl = ebx.full;
2922                 pr_info("CPU erratum AAJ80 worked around\n");
2923         }
2924 }
2925
2926 /*
2927  * enable software workaround for errata:
2928  * SNB: BJ122
2929  * IVB: BV98
2930  * HSW: HSD29
2931  *
2932  * Only needed when HT is enabled. However detecting
2933  * if HT is enabled is difficult (model specific). So instead,
2934  * we enable the workaround in the early boot, and verify if
2935  * it is needed in a later initcall phase once we have valid
2936  * topology information to check if HT is actually enabled
2937  */
2938 static __init void intel_ht_bug(void)
2939 {
2940         x86_pmu.flags |= PMU_FL_EXCL_CNTRS | PMU_FL_EXCL_ENABLED;
2941
2942         x86_pmu.commit_scheduling = intel_commit_scheduling;
2943         x86_pmu.start_scheduling = intel_start_scheduling;
2944         x86_pmu.stop_scheduling = intel_stop_scheduling;
2945 }
2946
2947 EVENT_ATTR_STR(mem-loads,       mem_ld_hsw,     "event=0xcd,umask=0x1,ldlat=3");
2948 EVENT_ATTR_STR(mem-stores,      mem_st_hsw,     "event=0xd0,umask=0x82")
2949
2950 /* Haswell special events */
2951 EVENT_ATTR_STR(tx-start,        tx_start,       "event=0xc9,umask=0x1");
2952 EVENT_ATTR_STR(tx-commit,       tx_commit,      "event=0xc9,umask=0x2");
2953 EVENT_ATTR_STR(tx-abort,        tx_abort,       "event=0xc9,umask=0x4");
2954 EVENT_ATTR_STR(tx-capacity,     tx_capacity,    "event=0x54,umask=0x2");
2955 EVENT_ATTR_STR(tx-conflict,     tx_conflict,    "event=0x54,umask=0x1");
2956 EVENT_ATTR_STR(el-start,        el_start,       "event=0xc8,umask=0x1");
2957 EVENT_ATTR_STR(el-commit,       el_commit,      "event=0xc8,umask=0x2");
2958 EVENT_ATTR_STR(el-abort,        el_abort,       "event=0xc8,umask=0x4");
2959 EVENT_ATTR_STR(el-capacity,     el_capacity,    "event=0x54,umask=0x2");
2960 EVENT_ATTR_STR(el-conflict,     el_conflict,    "event=0x54,umask=0x1");
2961 EVENT_ATTR_STR(cycles-t,        cycles_t,       "event=0x3c,in_tx=1");
2962 EVENT_ATTR_STR(cycles-ct,       cycles_ct,      "event=0x3c,in_tx=1,in_tx_cp=1");
2963
2964 static struct attribute *hsw_events_attrs[] = {
2965         EVENT_PTR(tx_start),
2966         EVENT_PTR(tx_commit),
2967         EVENT_PTR(tx_abort),
2968         EVENT_PTR(tx_capacity),
2969         EVENT_PTR(tx_conflict),
2970         EVENT_PTR(el_start),
2971         EVENT_PTR(el_commit),
2972         EVENT_PTR(el_abort),
2973         EVENT_PTR(el_capacity),
2974         EVENT_PTR(el_conflict),
2975         EVENT_PTR(cycles_t),
2976         EVENT_PTR(cycles_ct),
2977         EVENT_PTR(mem_ld_hsw),
2978         EVENT_PTR(mem_st_hsw),
2979         NULL
2980 };
2981
2982 __init int intel_pmu_init(void)
2983 {
2984         union cpuid10_edx edx;
2985         union cpuid10_eax eax;
2986         union cpuid10_ebx ebx;
2987         struct event_constraint *c;
2988         unsigned int unused;
2989         struct extra_reg *er;
2990         int version, i;
2991
2992         if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
2993                 switch (boot_cpu_data.x86) {
2994                 case 0x6:
2995                         return p6_pmu_init();
2996                 case 0xb:
2997                         return knc_pmu_init();
2998                 case 0xf:
2999                         return p4_pmu_init();
3000                 }
3001                 return -ENODEV;
3002         }
3003
3004         /*
3005          * Check whether the Architectural PerfMon supports
3006          * Branch Misses Retired hw_event or not.
3007          */
3008         cpuid(10, &eax.full, &ebx.full, &unused, &edx.full);
3009         if (eax.split.mask_length < ARCH_PERFMON_EVENTS_COUNT)
3010                 return -ENODEV;
3011
3012         version = eax.split.version_id;
3013         if (version < 2)
3014                 x86_pmu = core_pmu;
3015         else
3016                 x86_pmu = intel_pmu;
3017
3018         x86_pmu.version                 = version;
3019         x86_pmu.num_counters            = eax.split.num_counters;
3020         x86_pmu.cntval_bits             = eax.split.bit_width;
3021         x86_pmu.cntval_mask             = (1ULL << eax.split.bit_width) - 1;
3022
3023         x86_pmu.events_maskl            = ebx.full;
3024         x86_pmu.events_mask_len         = eax.split.mask_length;
3025
3026         x86_pmu.max_pebs_events         = min_t(unsigned, MAX_PEBS_EVENTS, x86_pmu.num_counters);
3027
3028         /*
3029          * Quirk: v2 perfmon does not report fixed-purpose events, so
3030          * assume at least 3 events:
3031          */
3032         if (version > 1)
3033                 x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
3034
3035         if (boot_cpu_has(X86_FEATURE_PDCM)) {
3036                 u64 capabilities;
3037
3038                 rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
3039                 x86_pmu.intel_cap.capabilities = capabilities;
3040         }
3041
3042         intel_ds_init();
3043
3044         x86_add_quirk(intel_arch_events_quirk); /* Install first, so it runs last */
3045
3046         /*
3047          * Install the hw-cache-events table:
3048          */
3049         switch (boot_cpu_data.x86_model) {
3050         case 14: /* 65nm Core "Yonah" */
3051                 pr_cont("Core events, ");
3052                 break;
3053
3054         case 15: /* 65nm Core2 "Merom"          */
3055                 x86_add_quirk(intel_clovertown_quirk);
3056         case 22: /* 65nm Core2 "Merom-L"        */
3057         case 23: /* 45nm Core2 "Penryn"         */
3058         case 29: /* 45nm Core2 "Dunnington (MP) */
3059                 memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
3060                        sizeof(hw_cache_event_ids));
3061
3062                 intel_pmu_lbr_init_core();
3063
3064                 x86_pmu.event_constraints = intel_core2_event_constraints;
3065                 x86_pmu.pebs_constraints = intel_core2_pebs_event_constraints;
3066                 pr_cont("Core2 events, ");
3067                 break;
3068
3069         case 30: /* 45nm Nehalem    */
3070         case 26: /* 45nm Nehalem-EP */
3071         case 46: /* 45nm Nehalem-EX */
3072                 memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
3073                        sizeof(hw_cache_event_ids));
3074                 memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,