arch/x86/oprofile/op_x86_model.h

   1 /**
   2  * @file op_x86_model.h
   3  * interface to x86 model-specific MSR operations
   4  *
   5  * @remark Copyright 2002 OProfile authors
   6  * @remark Read the file COPYING
   7  *
   8  * @author Graydon Hoare
   9  */
  10
  11 #ifndef OP_X86_MODEL_H
  12 #define OP_X86_MODEL_H
  13
  14 #include <asm/intel_arch_perfmon.h>
  15
  16 #define CTR_IS_RESERVED(msrs, c)        ((msrs)->counters[(c)].addr ? 1 : 0)
  17 #define CTRL_IS_RESERVED(msrs, c)       ((msrs)->controls[(c)].addr ? 1 : 0)
  18 #define CTRL_SET_ACTIVE(val)            ((val) |= ARCH_PERFMON_EVENTSEL0_ENABLE)
  19 #define CTRL_SET_ENABLE(val)            ((val) |= ARCH_PERFMON_EVENTSEL_INT)
  20 #define CTRL_SET_INACTIVE(val)          ((val) &= ~ARCH_PERFMON_EVENTSEL0_ENABLE)
  21 #define CTRL_SET_KERN(val, k)           ((val) |= ((k) ? ARCH_PERFMON_EVENTSEL_OS : 0))
  22 #define CTRL_SET_USR(val, u)            ((val) |= ((u) ? ARCH_PERFMON_EVENTSEL_USR : 0))
  23 #define CTRL_SET_UM(val, m)             ((val) |= ((m) << 8))
  24
  25 struct op_saved_msr {
  26         unsigned int high;
  27         unsigned int low;
  28 };
  29
  30 struct op_msr {
  31         unsigned long addr;
  32         struct op_saved_msr saved;
  33 };
  34
  35 struct op_msrs {
  36         struct op_msr *counters;
  37         struct op_msr *controls;
  38 };
  39
  40 struct pt_regs;
  41
  42 /* The model vtable abstracts the differences between
  43  * various x86 CPU models' perfctr support.
  44  */
  45 struct op_x86_model_spec {
  46         unsigned int    num_counters;
  47         unsigned int    num_controls;
  48         int             (*init)(struct oprofile_operations *ops);
  49         void            (*exit)(void);
  50         void            (*fill_in_addresses)(struct op_msrs * const msrs);
  51         void            (*setup_ctrs)(struct op_x86_model_spec const *model,
  52                                       struct op_msrs const * const msrs);
  53         int             (*check_ctrs)(struct pt_regs * const regs,
  54                                       struct op_msrs const * const msrs);
  55         void            (*start)(struct op_msrs const * const msrs);
  56         void            (*stop)(struct op_msrs const * const msrs);
  57         void            (*shutdown)(struct op_msrs const * const msrs);
  58 };
  59
  60 extern struct op_x86_model_spec const op_ppro_spec;
  61 extern struct op_x86_model_spec const op_p4_spec;
  62 extern struct op_x86_model_spec const op_p4_ht2_spec;
  63 extern struct op_x86_model_spec const op_amd_spec;
  64 extern struct op_x86_model_spec op_arch_perfmon_spec;
  65
  66 #endif /* OP_X86_MODEL_H */