arch/x86/include/asm/perf_event.h

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