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 X86_PMC_MAX_GENERIC                                    32
   9 #define X86_PMC_MAX_FIXED                                       3
  10
  11 #define X86_PMC_IDX_GENERIC                                     0
  12 #define X86_PMC_IDX_FIXED                                      32
  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_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 AMD_PERFMON_EVENTSEL_GUESTONLY                  (1ULL << 40)
  33 #define AMD_PERFMON_EVENTSEL_HOSTONLY                   (1ULL << 41)
  34
  35 #define AMD64_EVENTSEL_EVENT    \
  36         (ARCH_PERFMON_EVENTSEL_EVENT | (0x0FULL << 32))
  37 #define INTEL_ARCH_EVENT_MASK   \
  38         (ARCH_PERFMON_EVENTSEL_UMASK | ARCH_PERFMON_EVENTSEL_EVENT)
  39
  40 #define X86_RAW_EVENT_MASK              \
  41         (ARCH_PERFMON_EVENTSEL_EVENT |  \
  42          ARCH_PERFMON_EVENTSEL_UMASK |  \
  43          ARCH_PERFMON_EVENTSEL_EDGE  |  \
  44          ARCH_PERFMON_EVENTSEL_INV   |  \
  45          ARCH_PERFMON_EVENTSEL_CMASK)
  46 #define AMD64_RAW_EVENT_MASK            \
  47         (X86_RAW_EVENT_MASK          |  \
  48          AMD64_EVENTSEL_EVENT)
  49 #define AMD64_NUM_COUNTERS                              4
  50 #define AMD64_NUM_COUNTERS_F15H                         6
  51 #define AMD64_NUM_COUNTERS_MAX                          AMD64_NUM_COUNTERS_F15H
  52
  53 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL           0x3c
  54 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK         (0x00 << 8)
  55 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX         0
  56 #define ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT \
  57                 (1 << (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX))
  58
  59 #define ARCH_PERFMON_BRANCH_MISSES_RETIRED              6
  60 #define ARCH_PERFMON_EVENTS_COUNT                       7
  61
  62 /*
  63  * Intel "Architectural Performance Monitoring" CPUID
  64  * detection/enumeration details:
  65  */
  66 union cpuid10_eax {
  67         struct {
  68                 unsigned int version_id:8;
  69                 unsigned int num_counters:8;
  70                 unsigned int bit_width:8;
  71                 unsigned int mask_length:8;
  72         } split;
  73         unsigned int full;
  74 };
  75
  76 union cpuid10_ebx {
  77         struct {
  78                 unsigned int no_unhalted_core_cycles:1;
  79                 unsigned int no_instructions_retired:1;
  80                 unsigned int no_unhalted_reference_cycles:1;
  81                 unsigned int no_llc_reference:1;
  82                 unsigned int no_llc_misses:1;
  83                 unsigned int no_branch_instruction_retired:1;
  84                 unsigned int no_branch_misses_retired:1;
  85         } split;
  86         unsigned int full;
  87 };
  88
  89 union cpuid10_edx {
  90         struct {
  91                 unsigned int num_counters_fixed:5;
  92                 unsigned int bit_width_fixed:8;
  93                 unsigned int reserved:19;
  94         } split;
  95         unsigned int full;
  96 };
  97
  98 struct x86_pmu_capability {
  99         int             version;
 100         int             num_counters_gp;
 101         int             num_counters_fixed;
 102         int             bit_width_gp;
 103         int             bit_width_fixed;
 104         unsigned int    events_mask;
 105         int             events_mask_len;
 106 };
 107
 108 /*
 109  * Fixed-purpose performance events:
 110  */
 111
 112 /*
 113  * All 3 fixed-mode PMCs are configured via this single MSR:
 114  */
 115 #define MSR_ARCH_PERFMON_FIXED_CTR_CTRL                 0x38d
 116
 117 /*
 118  * The counts are available in three separate MSRs:
 119  */
 120
 121 /* Instr_Retired.Any: */
 122 #define MSR_ARCH_PERFMON_FIXED_CTR0                     0x309
 123 #define X86_PMC_IDX_FIXED_INSTRUCTIONS                  (X86_PMC_IDX_FIXED + 0)
 124
 125 /* CPU_CLK_Unhalted.Core: */
 126 #define MSR_ARCH_PERFMON_FIXED_CTR1                     0x30a
 127 #define X86_PMC_IDX_FIXED_CPU_CYCLES                    (X86_PMC_IDX_FIXED + 1)
 128
 129 /* CPU_CLK_Unhalted.Ref: */
 130 #define MSR_ARCH_PERFMON_FIXED_CTR2                     0x30b
 131 #define X86_PMC_IDX_FIXED_BUS_CYCLES                    (X86_PMC_IDX_FIXED + 2)
 132
 133 /*
 134  * We model BTS tracing as another fixed-mode PMC.
 135  *
 136  * We choose a value in the middle of the fixed event range, since lower
 137  * values are used by actual fixed events and higher values are used
 138  * to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr.
 139  */
 140 #define X86_PMC_IDX_FIXED_BTS                           (X86_PMC_IDX_FIXED + 16)
 141
 142 /*
 143  * IBS cpuid feature detection
 144  */
 145
 146 #define IBS_CPUID_FEATURES              0x8000001b
 147
 148 /*
 149  * Same bit mask as for IBS cpuid feature flags (Fn8000_001B_EAX), but
 150  * bit 0 is used to indicate the existence of IBS.
 151  */
 152 #define IBS_CAPS_AVAIL                  (1U<<0)
 153 #define IBS_CAPS_FETCHSAM               (1U<<1)
 154 #define IBS_CAPS_OPSAM                  (1U<<2)
 155 #define IBS_CAPS_RDWROPCNT              (1U<<3)
 156 #define IBS_CAPS_OPCNT                  (1U<<4)
 157 #define IBS_CAPS_BRNTRGT                (1U<<5)
 158 #define IBS_CAPS_OPCNTEXT               (1U<<6)
 159
 160 #define IBS_CAPS_DEFAULT                (IBS_CAPS_AVAIL         \
 161                                          | IBS_CAPS_FETCHSAM    \
 162                                          | IBS_CAPS_OPSAM)
 163
 164 /*
 165  * IBS APIC setup
 166  */
 167 #define IBSCTL                          0x1cc
 168 #define IBSCTL_LVT_OFFSET_VALID         (1ULL<<8)
 169 #define IBSCTL_LVT_OFFSET_MASK          0x0F
 170
 171 /* IbsFetchCtl bits/masks */
 172 #define IBS_FETCH_RAND_EN       (1ULL<<57)
 173 #define IBS_FETCH_VAL           (1ULL<<49)
 174 #define IBS_FETCH_ENABLE        (1ULL<<48)
 175 #define IBS_FETCH_CNT           0xFFFF0000ULL
 176 #define IBS_FETCH_MAX_CNT       0x0000FFFFULL
 177
 178 /* IbsOpCtl bits */
 179 #define IBS_OP_CNT_CTL          (1ULL<<19)
 180 #define IBS_OP_VAL              (1ULL<<18)
 181 #define IBS_OP_ENABLE           (1ULL<<17)
 182 #define IBS_OP_MAX_CNT          0x0000FFFFULL
 183 #define IBS_OP_MAX_CNT_EXT      0x007FFFFFULL   /* not a register bit mask */
 184
 185 extern u32 get_ibs_caps(void);
 186
 187 #ifdef CONFIG_PERF_EVENTS
 188 extern void perf_events_lapic_init(void);
 189
 190 #define PERF_EVENT_INDEX_OFFSET                 0
 191
 192 /*
 193  * Abuse bit 3 of the cpu eflags register to indicate proper PEBS IP fixups.
 194  * This flag is otherwise unused and ABI specified to be 0, so nobody should
 195  * care what we do with it.
 196  */
 197 #define PERF_EFLAGS_EXACT       (1UL << 3)
 198
 199 struct pt_regs;
 200 extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
 201 extern unsigned long perf_misc_flags(struct pt_regs *regs);
 202 #define perf_misc_flags(regs)   perf_misc_flags(regs)
 203
 204 #include <asm/stacktrace.h>
 205
 206 /*
 207  * We abuse bit 3 from flags to pass exact information, see perf_misc_flags
 208  * and the comment with PERF_EFLAGS_EXACT.
 209  */
 210 #define perf_arch_fetch_caller_regs(regs, __ip)         {       \
 211         (regs)->ip = (__ip);                                    \
 212         (regs)->bp = caller_frame_pointer();                    \
 213         (regs)->cs = __KERNEL_CS;                               \
 214         regs->flags = 0;                                        \
 215         asm volatile(                                           \
 216                 _ASM_MOV "%%"_ASM_SP ", %0\n"                   \
 217                 : "=m" ((regs)->sp)                             \
 218                 :: "memory"                                     \
 219         );                                                      \
 220 }
 221
 222 struct perf_guest_switch_msr {
 223         unsigned msr;
 224         u64 host, guest;
 225 };
 226
 227 extern struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr);
 228 extern void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap);
 229 #else
 230 static inline perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
 231 {
 232         *nr = 0;
 233         return NULL;
 234 }
 235
 236 static inline void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap)
 237 {
 238         memset(cap, 0, sizeof(*cap));
 239 }
 240
 241 static inline void perf_events_lapic_init(void) { }
 242 #endif
 243
 244 #endif /* _ASM_X86_PERF_EVENT_H */