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 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)
  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)
  63 #define AMD64_RAW_EVENT_MASK            \
  64         (X86_RAW_EVENT_MASK          |  \
  65          AMD64_EVENTSEL_EVENT)
  66 #define AMD64_RAW_EVENT_MASK_NB         \
  67         (AMD64_EVENTSEL_EVENT        |  \
  68          ARCH_PERFMON_EVENTSEL_UMASK)
  69 #define AMD64_NUM_COUNTERS                              4
  70 #define AMD64_NUM_COUNTERS_CORE                         6
  71 #define AMD64_NUM_COUNTERS_NB                           4
  72
  73 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL           0x3c
  74 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK         (0x00 << 8)
  75 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX         0
  76 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT \
  77                 (1 << (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX))
  78
  79 #define ARCH_PERFMON_BRANCH_MISSES_RETIRED              6
  80 #define ARCH_PERFMON_EVENTS_COUNT                       7
  81
  82 /*
  83  * Intel "Architectural Performance Monitoring" CPUID
  84  * detection/enumeration details:
  85  */
  86 union cpuid10_eax {
  87         struct {
  88                 unsigned int version_id:8;
  89                 unsigned int num_counters:8;
  90                 unsigned int bit_width:8;
  91                 unsigned int mask_length:8;
  92         } split;
  93         unsigned int full;
  94 };
  95
  96 union 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
 109 union cpuid10_edx {
 110         struct {
 111                 unsigned int num_counters_fixed:5;
 112                 unsigned int bit_width_fixed:8;
 113                 unsigned int reserved:19;
 114         } split;
 115         unsigned int full;
 116 };
 117
 118 struct 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 };
 127
 128 /*
 129  * Fixed-purpose performance events:
 130  */
 131
 132 /*
 133  * All 3 fixed-mode PMCs are configured via this single MSR:
 134  */
 135 #define MSR_ARCH_PERFMON_FIXED_CTR_CTRL 0x38d
 136
 137 /*
 138  * The counts are available in three separate MSRs:
 139  */
 140
 141 /* Instr_Retired.Any: */
 142 #define MSR_ARCH_PERFMON_FIXED_CTR0     0x309
 143 #define INTEL_PMC_IDX_FIXED_INSTRUCTIONS        (INTEL_PMC_IDX_FIXED + 0)
 144
 145 /* CPU_CLK_Unhalted.Core: */
 146 #define MSR_ARCH_PERFMON_FIXED_CTR1     0x30a
 147 #define INTEL_PMC_IDX_FIXED_CPU_CYCLES  (INTEL_PMC_IDX_FIXED + 1)
 148
 149 /* CPU_CLK_Unhalted.Ref: */
 150 #define MSR_ARCH_PERFMON_FIXED_CTR2     0x30b
 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)
 153
 154 /*
 155  * We model BTS tracing as another fixed-mode PMC.
 156  *
 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
 159  * to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr.
 160  */
 161 #define INTEL_PMC_IDX_FIXED_BTS                         (INTEL_PMC_IDX_FIXED + 16)
 162
 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)
 169 #define GLOBAL_STATUS_TRACE_TOPAPMI                     BIT_ULL(55)
 170
 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)
 188 #define IBS_CAPS_RIPINVALIDCHK          (1U<<7)
 189 #define IBS_CAPS_OPBRNFUSE              (1U<<8)
 190 #define IBS_CAPS_FETCHCTLEXTD           (1U<<9)
 191 #define IBS_CAPS_OPDATA4                (1U<<10)
 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
 204 /* ibs fetch bits/masks */
 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
 210
 211 /* ibs op bits/masks */
 212 /* lower 4 bits of the current count are ignored: */
 213 #define IBS_OP_CUR_CNT          (0xFFFF0ULL<<32)
 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 */
 219 #define IBS_RIP_INVALID         (1ULL<<38)
 220
 221 #ifdef CONFIG_X86_LOCAL_APIC
 222 extern u32 get_ibs_caps(void);
 223 #else
 224 static inline u32 get_ibs_caps(void) { return 0; }
 225 #endif
 226
 227 #ifdef CONFIG_PERF_EVENTS
 228 extern void perf_events_lapic_init(void);
 229
 230 /*
 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().
 238  */
 239 #define PERF_EFLAGS_EXACT       (1UL << 3)
 240 #define PERF_EFLAGS_VM          (1UL << 5)
 241
 242 struct pt_regs;
 243 extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
 244 extern unsigned long perf_misc_flags(struct pt_regs *regs);
 245 #define perf_misc_flags(regs)   perf_misc_flags(regs)
 246
 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;                                        \
 258         asm volatile(                                           \
 259                 _ASM_MOV "%%"_ASM_SP ", %0\n"                   \
 260                 : "=m" ((regs)->sp)                             \
 261                 :: "memory"                                     \
 262         );                                                      \
 263 }
 264
 265 struct perf_guest_switch_msr {
 266         unsigned msr;
 267         u64 host, guest;
 268 };
 269
 270 extern struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr);
 271 extern void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap);
 272 extern void perf_check_microcode(void);
 273 #else
 274 static inline struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
 275 {
 276         *nr = 0;
 277         return NULL;
 278 }
 279
 280 static inline void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap)
 281 {
 282         memset(cap, 0, sizeof(*cap));
 283 }
 284
 285 static inline void perf_events_lapic_init(void) { }
 286 static inline void perf_check_microcode(void) { }
 287 #endif
 288
 289 #ifdef CONFIG_CPU_SUP_INTEL
 290  extern void intel_pt_handle_vmx(int on);
 291 #endif
 292
 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
 301 #define arch_perf_out_copy_user copy_from_user_nmi
 302
 303 #endif /* _ASM_X86_PERF_EVENT_H */