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b2441318 1/* SPDX-License-Identifier: GPL-2.0 */
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2#ifndef _ASM_X86_PERF_EVENT_H
3#define _ASM_X86_PERF_EVENT_H
003a46cf 4
eb2b8618 5/*
cdd6c482 6 * Performance event hw details:
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7 */
8
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9#define INTEL_PMC_MAX_GENERIC 32
10#define INTEL_PMC_MAX_FIXED 3
11#define INTEL_PMC_IDX_FIXED 32
eb2b8618 12
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13#define X86_PMC_IDX_MAX 64
14
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15#define MSR_ARCH_PERFMON_PERFCTR0 0xc1
16#define MSR_ARCH_PERFMON_PERFCTR1 0xc2
003a46cf 17
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18#define MSR_ARCH_PERFMON_EVENTSEL0 0x186
19#define MSR_ARCH_PERFMON_EVENTSEL1 0x187
003a46cf 20
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21#define ARCH_PERFMON_EVENTSEL_EVENT 0x000000FFULL
22#define ARCH_PERFMON_EVENTSEL_UMASK 0x0000FF00ULL
23#define ARCH_PERFMON_EVENTSEL_USR (1ULL << 16)
24#define ARCH_PERFMON_EVENTSEL_OS (1ULL << 17)
25#define ARCH_PERFMON_EVENTSEL_EDGE (1ULL << 18)
a7b9d2cc 26#define ARCH_PERFMON_EVENTSEL_PIN_CONTROL (1ULL << 19)
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27#define ARCH_PERFMON_EVENTSEL_INT (1ULL << 20)
28#define ARCH_PERFMON_EVENTSEL_ANY (1ULL << 21)
29#define ARCH_PERFMON_EVENTSEL_ENABLE (1ULL << 22)
30#define ARCH_PERFMON_EVENTSEL_INV (1ULL << 23)
31#define ARCH_PERFMON_EVENTSEL_CMASK 0xFF000000ULL
32
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33#define HSW_IN_TX (1ULL << 32)
34#define HSW_IN_TX_CHECKPOINTED (1ULL << 33)
35
e259514e 36#define AMD64_EVENTSEL_INT_CORE_ENABLE (1ULL << 36)
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37#define AMD64_EVENTSEL_GUESTONLY (1ULL << 40)
38#define AMD64_EVENTSEL_HOSTONLY (1ULL << 41)
011af857 39
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40#define AMD64_EVENTSEL_INT_CORE_SEL_SHIFT 37
41#define AMD64_EVENTSEL_INT_CORE_SEL_MASK \
42 (0xFULL << AMD64_EVENTSEL_INT_CORE_SEL_SHIFT)
43
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44#define AMD64_EVENTSEL_EVENT \
45 (ARCH_PERFMON_EVENTSEL_EVENT | (0x0FULL << 32))
46#define INTEL_ARCH_EVENT_MASK \
47 (ARCH_PERFMON_EVENTSEL_UMASK | ARCH_PERFMON_EVENTSEL_EVENT)
48
49#define X86_RAW_EVENT_MASK \
50 (ARCH_PERFMON_EVENTSEL_EVENT | \
51 ARCH_PERFMON_EVENTSEL_UMASK | \
52 ARCH_PERFMON_EVENTSEL_EDGE | \
53 ARCH_PERFMON_EVENTSEL_INV | \
54 ARCH_PERFMON_EVENTSEL_CMASK)
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55#define X86_ALL_EVENT_FLAGS \
56 (ARCH_PERFMON_EVENTSEL_EDGE | \
57 ARCH_PERFMON_EVENTSEL_INV | \
58 ARCH_PERFMON_EVENTSEL_CMASK | \
59 ARCH_PERFMON_EVENTSEL_ANY | \
60 ARCH_PERFMON_EVENTSEL_PIN_CONTROL | \
61 HSW_IN_TX | \
62 HSW_IN_TX_CHECKPOINTED)
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63#define AMD64_RAW_EVENT_MASK \
64 (X86_RAW_EVENT_MASK | \
65 AMD64_EVENTSEL_EVENT)
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66#define AMD64_RAW_EVENT_MASK_NB \
67 (AMD64_EVENTSEL_EVENT | \
68 ARCH_PERFMON_EVENTSEL_UMASK)
ee5789db 69#define AMD64_NUM_COUNTERS 4
b1dc3c48 70#define AMD64_NUM_COUNTERS_CORE 6
e259514e 71#define AMD64_NUM_COUNTERS_NB 4
04a705df 72
ee5789db 73#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL 0x3c
241771ef 74#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK (0x00 << 8)
ee5789db 75#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX 0
003a46cf 76#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT \
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77 (1 << (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX))
78
ee5789db 79#define ARCH_PERFMON_BRANCH_MISSES_RETIRED 6
ffb871bc 80#define ARCH_PERFMON_EVENTS_COUNT 7
003a46cf 81
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82/*
83 * Intel "Architectural Performance Monitoring" CPUID
84 * detection/enumeration details:
85 */
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86union cpuid10_eax {
87 struct {
88 unsigned int version_id:8;
948b1bb8 89 unsigned int num_counters:8;
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90 unsigned int bit_width:8;
91 unsigned int mask_length:8;
92 } split;
93 unsigned int full;
94};
95
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96union cpuid10_ebx {
97 struct {
98 unsigned int no_unhalted_core_cycles:1;
99 unsigned int no_instructions_retired:1;
100 unsigned int no_unhalted_reference_cycles:1;
101 unsigned int no_llc_reference:1;
102 unsigned int no_llc_misses:1;
103 unsigned int no_branch_instruction_retired:1;
104 unsigned int no_branch_misses_retired:1;
105 } split;
106 unsigned int full;
107};
108
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109union cpuid10_edx {
110 struct {
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111 unsigned int num_counters_fixed:5;
112 unsigned int bit_width_fixed:8;
113 unsigned int reserved:19;
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114 } split;
115 unsigned int full;
116};
117
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118struct x86_pmu_capability {
119 int version;
120 int num_counters_gp;
121 int num_counters_fixed;
122 int bit_width_gp;
123 int bit_width_fixed;
124 unsigned int events_mask;
125 int events_mask_len;
126};
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127
128/*
cdd6c482 129 * Fixed-purpose performance events:
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130 */
131
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132/*
133 * All 3 fixed-mode PMCs are configured via this single MSR:
134 */
cd09c0c4 135#define MSR_ARCH_PERFMON_FIXED_CTR_CTRL 0x38d
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136
137/*
138 * The counts are available in three separate MSRs:
139 */
140
703e937c 141/* Instr_Retired.Any: */
cd09c0c4 142#define MSR_ARCH_PERFMON_FIXED_CTR0 0x309
15c7ad51 143#define INTEL_PMC_IDX_FIXED_INSTRUCTIONS (INTEL_PMC_IDX_FIXED + 0)
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144
145/* CPU_CLK_Unhalted.Core: */
cd09c0c4 146#define MSR_ARCH_PERFMON_FIXED_CTR1 0x30a
15c7ad51 147#define INTEL_PMC_IDX_FIXED_CPU_CYCLES (INTEL_PMC_IDX_FIXED + 1)
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148
149/* CPU_CLK_Unhalted.Ref: */
cd09c0c4 150#define MSR_ARCH_PERFMON_FIXED_CTR2 0x30b
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151#define INTEL_PMC_IDX_FIXED_REF_CYCLES (INTEL_PMC_IDX_FIXED + 2)
152#define INTEL_PMC_MSK_FIXED_REF_CYCLES (1ULL << INTEL_PMC_IDX_FIXED_REF_CYCLES)
703e937c 153
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154/*
155 * We model BTS tracing as another fixed-mode PMC.
156 *
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157 * We choose a value in the middle of the fixed event range, since lower
158 * values are used by actual fixed events and higher values are used
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159 * to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr.
160 */
15c7ad51 161#define INTEL_PMC_IDX_FIXED_BTS (INTEL_PMC_IDX_FIXED + 16)
30dd568c 162
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163#define GLOBAL_STATUS_COND_CHG BIT_ULL(63)
164#define GLOBAL_STATUS_BUFFER_OVF BIT_ULL(62)
165#define GLOBAL_STATUS_UNC_OVF BIT_ULL(61)
166#define GLOBAL_STATUS_ASIF BIT_ULL(60)
167#define GLOBAL_STATUS_COUNTERS_FROZEN BIT_ULL(59)
168#define GLOBAL_STATUS_LBRS_FROZEN BIT_ULL(58)
5690ae28 169#define GLOBAL_STATUS_TRACE_TOPAPMI BIT_ULL(55)
b83ff1c8 170
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171/*
172 * IBS cpuid feature detection
173 */
174
175#define IBS_CPUID_FEATURES 0x8000001b
176
177/*
178 * Same bit mask as for IBS cpuid feature flags (Fn8000_001B_EAX), but
179 * bit 0 is used to indicate the existence of IBS.
180 */
181#define IBS_CAPS_AVAIL (1U<<0)
182#define IBS_CAPS_FETCHSAM (1U<<1)
183#define IBS_CAPS_OPSAM (1U<<2)
184#define IBS_CAPS_RDWROPCNT (1U<<3)
185#define IBS_CAPS_OPCNT (1U<<4)
186#define IBS_CAPS_BRNTRGT (1U<<5)
187#define IBS_CAPS_OPCNTEXT (1U<<6)
d47e8238 188#define IBS_CAPS_RIPINVALIDCHK (1U<<7)
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189#define IBS_CAPS_OPBRNFUSE (1U<<8)
190#define IBS_CAPS_FETCHCTLEXTD (1U<<9)
191#define IBS_CAPS_OPDATA4 (1U<<10)
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192
193#define IBS_CAPS_DEFAULT (IBS_CAPS_AVAIL \
194 | IBS_CAPS_FETCHSAM \
195 | IBS_CAPS_OPSAM)
196
197/*
198 * IBS APIC setup
199 */
200#define IBSCTL 0x1cc
201#define IBSCTL_LVT_OFFSET_VALID (1ULL<<8)
202#define IBSCTL_LVT_OFFSET_MASK 0x0F
203
d47e8238 204/* ibs fetch bits/masks */
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205#define IBS_FETCH_RAND_EN (1ULL<<57)
206#define IBS_FETCH_VAL (1ULL<<49)
207#define IBS_FETCH_ENABLE (1ULL<<48)
208#define IBS_FETCH_CNT 0xFFFF0000ULL
209#define IBS_FETCH_MAX_CNT 0x0000FFFFULL
1d6040f1 210
d47e8238 211/* ibs op bits/masks */
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212/* lower 4 bits of the current count are ignored: */
213#define IBS_OP_CUR_CNT (0xFFFF0ULL<<32)
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214#define IBS_OP_CNT_CTL (1ULL<<19)
215#define IBS_OP_VAL (1ULL<<18)
216#define IBS_OP_ENABLE (1ULL<<17)
217#define IBS_OP_MAX_CNT 0x0000FFFFULL
218#define IBS_OP_MAX_CNT_EXT 0x007FFFFFULL /* not a register bit mask */
d47e8238 219#define IBS_RIP_INVALID (1ULL<<38)
30dd568c 220
978da300 221#ifdef CONFIG_X86_LOCAL_APIC
b7169166 222extern u32 get_ibs_caps(void);
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223#else
224static inline u32 get_ibs_caps(void) { return 0; }
225#endif
b7169166 226
cdd6c482 227#ifdef CONFIG_PERF_EVENTS
cdd6c482 228extern void perf_events_lapic_init(void);
194002b2 229
ef21f683 230/*
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231 * Abuse bits {3,5} of the cpu eflags register. These flags are otherwise
232 * unused and ABI specified to be 0, so nobody should care what we do with
233 * them.
234 *
235 * EXACT - the IP points to the exact instruction that triggered the
236 * event (HW bugs exempt).
237 * VM - original X86_VM_MASK; see set_linear_ip().
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238 */
239#define PERF_EFLAGS_EXACT (1UL << 3)
d07bdfd3 240#define PERF_EFLAGS_VM (1UL << 5)
ef21f683 241
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242struct pt_regs;
243extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
244extern unsigned long perf_misc_flags(struct pt_regs *regs);
245#define perf_misc_flags(regs) perf_misc_flags(regs)
ef21f683 246
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247#include <asm/stacktrace.h>
248
249/*
250 * We abuse bit 3 from flags to pass exact information, see perf_misc_flags
251 * and the comment with PERF_EFLAGS_EXACT.
252 */
253#define perf_arch_fetch_caller_regs(regs, __ip) { \
254 (regs)->ip = (__ip); \
255 (regs)->bp = caller_frame_pointer(); \
256 (regs)->cs = __KERNEL_CS; \
257 regs->flags = 0; \
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258 asm volatile( \
259 _ASM_MOV "%%"_ASM_SP ", %0\n" \
260 : "=m" ((regs)->sp) \
261 :: "memory" \
262 ); \
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263}
264
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265struct perf_guest_switch_msr {
266 unsigned msr;
267 u64 host, guest;
268};
269
270extern struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr);
b3d9468a 271extern void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap);
c93dc84c 272extern void perf_check_microcode(void);
241771ef 273#else
35d56ca9 274static inline struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
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275{
276 *nr = 0;
277 return NULL;
278}
279
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280static inline void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap)
281{
282 memset(cap, 0, sizeof(*cap));
283}
284
cdd6c482 285static inline void perf_events_lapic_init(void) { }
c93dc84c 286static inline void perf_check_microcode(void) { }
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287#endif
288
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289#ifdef CONFIG_CPU_SUP_INTEL
290 extern void intel_pt_handle_vmx(int on);
291#endif
292
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293#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_AMD)
294 extern void amd_pmu_enable_virt(void);
295 extern void amd_pmu_disable_virt(void);
296#else
297 static inline void amd_pmu_enable_virt(void) { }
298 static inline void amd_pmu_disable_virt(void) { }
299#endif
300
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301#define arch_perf_out_copy_user copy_from_user_nmi
302
cdd6c482 303#endif /* _ASM_X86_PERF_EVENT_H */