arch/x86/include/asm/perf_event.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_PERF_EVENT_H
   3 #define _ASM_X86_PERF_EVENT_H
   4
   5 /*
   6  * Performance event hw details:
   7  */
   8
   9 #define INTEL_PMC_MAX_GENERIC                                  32
  10 #define INTEL_PMC_MAX_FIXED                                     3
  11 #define INTEL_PMC_IDX_FIXED                                    32
  12
  13 #define X86_PMC_IDX_MAX                                        64
  14
  15 #define MSR_ARCH_PERFMON_PERFCTR0                             0xc1
  16 #define MSR_ARCH_PERFMON_PERFCTR1                             0xc2
  17
  18 #define MSR_ARCH_PERFMON_EVENTSEL0                           0x186
  19 #define MSR_ARCH_PERFMON_EVENTSEL1                           0x187
  20
  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)
  26 #define ARCH_PERFMON_EVENTSEL_PIN_CONTROL               (1ULL << 19)
  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
  33 #define HSW_IN_TX                                       (1ULL << 32)
  34 #define HSW_IN_TX_CHECKPOINTED                          (1ULL << 33)
  35
  36 #define AMD64_EVENTSEL_INT_CORE_ENABLE                  (1ULL << 36)
  37 #define AMD64_EVENTSEL_GUESTONLY                        (1ULL << 40)
  38 #define AMD64_EVENTSEL_HOSTONLY                         (1ULL << 41)
  39
  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
  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 AMD64_L3_SLICE_SHIFT                            48
  50 #define AMD64_L3_SLICE_MASK                             \
  51         ((0xFULL) << AMD64_L3_SLICE_SHIFT)
  52
  53 #define AMD64_L3_THREAD_SHIFT                           56
  54 #define AMD64_L3_THREAD_MASK                            \
  55         ((0xFFULL) << AMD64_L3_THREAD_SHIFT)
  56
  57 #define X86_RAW_EVENT_MASK              \
  58         (ARCH_PERFMON_EVENTSEL_EVENT |  \
  59          ARCH_PERFMON_EVENTSEL_UMASK |  \
  60          ARCH_PERFMON_EVENTSEL_EDGE  |  \
  61          ARCH_PERFMON_EVENTSEL_INV   |  \
  62          ARCH_PERFMON_EVENTSEL_CMASK)
  63 #define X86_ALL_EVENT_FLAGS                     \
  64         (ARCH_PERFMON_EVENTSEL_EDGE |           \
  65          ARCH_PERFMON_EVENTSEL_INV |            \
  66          ARCH_PERFMON_EVENTSEL_CMASK |          \
  67          ARCH_PERFMON_EVENTSEL_ANY |            \
  68          ARCH_PERFMON_EVENTSEL_PIN_CONTROL |    \
  69          HSW_IN_TX |                            \
  70          HSW_IN_TX_CHECKPOINTED)
  71 #define AMD64_RAW_EVENT_MASK            \
  72         (X86_RAW_EVENT_MASK          |  \
  73          AMD64_EVENTSEL_EVENT)
  74 #define AMD64_RAW_EVENT_MASK_NB         \
  75         (AMD64_EVENTSEL_EVENT        |  \
  76          ARCH_PERFMON_EVENTSEL_UMASK)
  77 #define AMD64_NUM_COUNTERS                              4
  78 #define AMD64_NUM_COUNTERS_CORE                         6
  79 #define AMD64_NUM_COUNTERS_NB                           4
  80
  81 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL           0x3c
  82 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK         (0x00 << 8)
  83 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX         0
  84 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT \
  85                 (1 << (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX))
  86
  87 #define ARCH_PERFMON_BRANCH_MISSES_RETIRED              6
  88 #define ARCH_PERFMON_EVENTS_COUNT                       7
  89
  90 /*
  91  * Intel "Architectural Performance Monitoring" CPUID
  92  * detection/enumeration details:
  93  */
  94 union cpuid10_eax {
  95         struct {
  96                 unsigned int version_id:8;
  97                 unsigned int num_counters:8;
  98                 unsigned int bit_width:8;
  99                 unsigned int mask_length:8;
 100         } split;
 101         unsigned int full;
 102 };
 103
 104 union cpuid10_ebx {
 105         struct {
 106                 unsigned int no_unhalted_core_cycles:1;
 107                 unsigned int no_instructions_retired:1;
 108                 unsigned int no_unhalted_reference_cycles:1;
 109                 unsigned int no_llc_reference:1;
 110                 unsigned int no_llc_misses:1;
 111                 unsigned int no_branch_instruction_retired:1;
 112                 unsigned int no_branch_misses_retired:1;
 113         } split;
 114         unsigned int full;
 115 };
 116
 117 union cpuid10_edx {
 118         struct {
 119                 unsigned int num_counters_fixed:5;
 120                 unsigned int bit_width_fixed:8;
 121                 unsigned int reserved:19;
 122         } split;
 123         unsigned int full;
 124 };
 125
 126 struct x86_pmu_capability {
 127         int             version;
 128         int             num_counters_gp;
 129         int             num_counters_fixed;
 130         int             bit_width_gp;
 131         int             bit_width_fixed;
 132         unsigned int    events_mask;
 133         int             events_mask_len;
 134 };
 135
 136 /*
 137  * Fixed-purpose performance events:
 138  */
 139
 140 /*
 141  * All 3 fixed-mode PMCs are configured via this single MSR:
 142  */
 143 #define MSR_ARCH_PERFMON_FIXED_CTR_CTRL 0x38d
 144
 145 /*
 146  * The counts are available in three separate MSRs:
 147  */
 148
 149 /* Instr_Retired.Any: */
 150 #define MSR_ARCH_PERFMON_FIXED_CTR0     0x309
 151 #define INTEL_PMC_IDX_FIXED_INSTRUCTIONS        (INTEL_PMC_IDX_FIXED + 0)
 152
 153 /* CPU_CLK_Unhalted.Core: */
 154 #define MSR_ARCH_PERFMON_FIXED_CTR1     0x30a
 155 #define INTEL_PMC_IDX_FIXED_CPU_CYCLES  (INTEL_PMC_IDX_FIXED + 1)
 156
 157 /* CPU_CLK_Unhalted.Ref: */
 158 #define MSR_ARCH_PERFMON_FIXED_CTR2     0x30b
 159 #define INTEL_PMC_IDX_FIXED_REF_CYCLES  (INTEL_PMC_IDX_FIXED + 2)
 160 #define INTEL_PMC_MSK_FIXED_REF_CYCLES  (1ULL << INTEL_PMC_IDX_FIXED_REF_CYCLES)
 161
 162 /*
 163  * We model BTS tracing as another fixed-mode PMC.
 164  *
 165  * We choose a value in the middle of the fixed event range, since lower
 166  * values are used by actual fixed events and higher values are used
 167  * to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr.
 168  */
 169 #define INTEL_PMC_IDX_FIXED_BTS                         (INTEL_PMC_IDX_FIXED + 16)
 170
 171 #define GLOBAL_STATUS_COND_CHG                          BIT_ULL(63)
 172 #define GLOBAL_STATUS_BUFFER_OVF                        BIT_ULL(62)
 173 #define GLOBAL_STATUS_UNC_OVF                           BIT_ULL(61)
 174 #define GLOBAL_STATUS_ASIF                              BIT_ULL(60)
 175 #define GLOBAL_STATUS_COUNTERS_FROZEN                   BIT_ULL(59)
 176 #define GLOBAL_STATUS_LBRS_FROZEN                       BIT_ULL(58)
 177 #define GLOBAL_STATUS_TRACE_TOPAPMI                     BIT_ULL(55)
 178
 179 /*
 180  * IBS cpuid feature detection
 181  */
 182
 183 #define IBS_CPUID_FEATURES              0x8000001b
 184
 185 /*
 186  * Same bit mask as for IBS cpuid feature flags (Fn8000_001B_EAX), but
 187  * bit 0 is used to indicate the existence of IBS.
 188  */
 189 #define IBS_CAPS_AVAIL                  (1U<<0)
 190 #define IBS_CAPS_FETCHSAM               (1U<<1)
 191 #define IBS_CAPS_OPSAM                  (1U<<2)
 192 #define IBS_CAPS_RDWROPCNT              (1U<<3)
 193 #define IBS_CAPS_OPCNT                  (1U<<4)
 194 #define IBS_CAPS_BRNTRGT                (1U<<5)
 195 #define IBS_CAPS_OPCNTEXT               (1U<<6)
 196 #define IBS_CAPS_RIPINVALIDCHK          (1U<<7)
 197 #define IBS_CAPS_OPBRNFUSE              (1U<<8)
 198 #define IBS_CAPS_FETCHCTLEXTD           (1U<<9)
 199 #define IBS_CAPS_OPDATA4                (1U<<10)
 200
 201 #define IBS_CAPS_DEFAULT                (IBS_CAPS_AVAIL         \
 202                                          | IBS_CAPS_FETCHSAM    \
 203                                          | IBS_CAPS_OPSAM)
 204
 205 /*
 206  * IBS APIC setup
 207  */
 208 #define IBSCTL                          0x1cc
 209 #define IBSCTL_LVT_OFFSET_VALID         (1ULL<<8)
 210 #define IBSCTL_LVT_OFFSET_MASK          0x0F
 211
 212 /* ibs fetch bits/masks */
 213 #define IBS_FETCH_RAND_EN       (1ULL<<57)
 214 #define IBS_FETCH_VAL           (1ULL<<49)
 215 #define IBS_FETCH_ENABLE        (1ULL<<48)
 216 #define IBS_FETCH_CNT           0xFFFF0000ULL
 217 #define IBS_FETCH_MAX_CNT       0x0000FFFFULL
 218
 219 /* ibs op bits/masks */
 220 /* lower 4 bits of the current count are ignored: */
 221 #define IBS_OP_CUR_CNT          (0xFFFF0ULL<<32)
 222 #define IBS_OP_CNT_CTL          (1ULL<<19)
 223 #define IBS_OP_VAL              (1ULL<<18)
 224 #define IBS_OP_ENABLE           (1ULL<<17)
 225 #define IBS_OP_MAX_CNT          0x0000FFFFULL
 226 #define IBS_OP_MAX_CNT_EXT      0x007FFFFFULL   /* not a register bit mask */
 227 #define IBS_RIP_INVALID         (1ULL<<38)
 228
 229 #ifdef CONFIG_X86_LOCAL_APIC
 230 extern u32 get_ibs_caps(void);
 231 #else
 232 static inline u32 get_ibs_caps(void) { return 0; }
 233 #endif
 234
 235 #ifdef CONFIG_PERF_EVENTS
 236 extern void perf_events_lapic_init(void);
 237
 238 /*
 239  * Abuse bits {3,5} of the cpu eflags register. These flags are otherwise
 240  * unused and ABI specified to be 0, so nobody should care what we do with
 241  * them.
 242  *
 243  * EXACT - the IP points to the exact instruction that triggered the
 244  *         event (HW bugs exempt).
 245  * VM    - original X86_VM_MASK; see set_linear_ip().
 246  */
 247 #define PERF_EFLAGS_EXACT       (1UL << 3)
 248 #define PERF_EFLAGS_VM          (1UL << 5)
 249
 250 struct pt_regs;
 251 extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
 252 extern unsigned long perf_misc_flags(struct pt_regs *regs);
 253 #define perf_misc_flags(regs)   perf_misc_flags(regs)
 254
 255 #include <asm/stacktrace.h>
 256
 257 /*
 258  * We abuse bit 3 from flags to pass exact information, see perf_misc_flags
 259  * and the comment with PERF_EFLAGS_EXACT.
 260  */
 261 #define perf_arch_fetch_caller_regs(regs, __ip)         {       \
 262         (regs)->ip = (__ip);                                    \
 263         (regs)->bp = caller_frame_pointer();                    \
 264         (regs)->cs = __KERNEL_CS;                               \
 265         regs->flags = 0;                                        \
 266         asm volatile(                                           \
 267                 _ASM_MOV "%%"_ASM_SP ", %0\n"                   \
 268                 : "=m" ((regs)->sp)                             \
 269                 :: "memory"                                     \
 270         );                                                      \
 271 }
 272
 273 struct perf_guest_switch_msr {
 274         unsigned msr;
 275         u64 host, guest;
 276 };
 277
 278 extern struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr);
 279 extern void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap);
 280 extern void perf_check_microcode(void);
 281 extern int x86_perf_rdpmc_index(struct perf_event *event);
 282 #else
 283 static inline struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
 284 {
 285         *nr = 0;
 286         return NULL;
 287 }
 288
 289 static inline void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap)
 290 {
 291         memset(cap, 0, sizeof(*cap));
 292 }
 293
 294 static inline void perf_events_lapic_init(void) { }
 295 static inline void perf_check_microcode(void) { }
 296 #endif
 297
 298 #ifdef CONFIG_CPU_SUP_INTEL
 299  extern void intel_pt_handle_vmx(int on);
 300 #endif
 301
 302 #if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_AMD)
 303  extern void amd_pmu_enable_virt(void);
 304  extern void amd_pmu_disable_virt(void);
 305 #else
 306  static inline void amd_pmu_enable_virt(void) { }
 307  static inline void amd_pmu_disable_virt(void) { }
 308 #endif
 309
 310 #define arch_perf_out_copy_user copy_from_user_nmi
 311
 312 #endif /* _ASM_X86_PERF_EVENT_H */