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  * @author Robert Richter <robert.richter@amd.com>
  10  */
  11
  12 #ifndef OP_X86_MODEL_H
  13 #define OP_X86_MODEL_H
  14
  15 #include <asm/types.h>
  16 #include <asm/perf_counter.h>
  17
  18 struct op_msr {
  19         unsigned long   addr;
  20         u64             saved;
  21 };
  22
  23 struct op_msrs {
  24         struct op_msr *counters;
  25         struct op_msr *controls;
  26         struct op_msr *multiplex;
  27 };
  28
  29 struct pt_regs;
  30
  31 struct oprofile_operations;
  32
  33 /* The model vtable abstracts the differences between
  34  * various x86 CPU models' perfctr support.
  35  */
  36 struct op_x86_model_spec {
  37         unsigned int    num_counters;
  38         unsigned int    num_controls;
  39         unsigned int    num_virt_counters;
  40         u64             reserved;
  41         u16             event_mask;
  42         int             (*init)(struct oprofile_operations *ops);
  43         void            (*exit)(void);
  44         void            (*fill_in_addresses)(struct op_msrs * const msrs);
  45         void            (*setup_ctrs)(struct op_x86_model_spec const *model,
  46                                       struct op_msrs const * const msrs);
  47         int             (*check_ctrs)(struct pt_regs * const regs,
  48                                       struct op_msrs const * const msrs);
  49         void            (*start)(struct op_msrs const * const msrs);
  50         void            (*stop)(struct op_msrs const * const msrs);
  51         void            (*shutdown)(struct op_msrs const * const msrs);
  52 #ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
  53         void            (*switch_ctrl)(struct op_x86_model_spec const *model,
  54                                        struct op_msrs const * const msrs);
  55 #endif
  56 };
  57
  58 struct op_counter_config;
  59
  60 extern u64 op_x86_get_ctrl(struct op_x86_model_spec const *model,
  61                            struct op_counter_config *counter_config);
  62 extern int op_x86_phys_to_virt(int phys);
  63 extern int op_x86_virt_to_phys(int virt);
  64
  65 extern struct op_x86_model_spec op_ppro_spec;
  66 extern struct op_x86_model_spec op_p4_spec;
  67 extern struct op_x86_model_spec op_p4_ht2_spec;
  68 extern struct op_x86_model_spec op_amd_spec;
  69 extern struct op_x86_model_spec op_arch_perfmon_spec;
  70
  71 #endif /* OP_X86_MODEL_H */