include/asm-powerpc/oprofile_impl.h

   1 /*
   2  * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
   3  *
   4  * Based on alpha version.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #ifndef _ASM_POWERPC_OPROFILE_IMPL_H
  13 #define _ASM_POWERPC_OPROFILE_IMPL_H
  14
  15 #define OP_MAX_COUNTER 8
  16
  17 /* Per-counter configuration as set via oprofilefs.  */
  18 struct op_counter_config {
  19 #ifdef __powerpc64__
  20         unsigned long valid;
  21 #endif
  22         unsigned long enabled;
  23         unsigned long event;
  24         unsigned long count;
  25         unsigned long kernel;
  26 #ifdef __powerpc64__
  27         /* We dont support per counter user/kernel selection */
  28 #endif
  29         unsigned long user;
  30         unsigned long unit_mask;
  31 };
  32
  33 /* System-wide configuration as set via oprofilefs.  */
  34 struct op_system_config {
  35 #ifdef __powerpc64__
  36         unsigned long mmcr0;
  37         unsigned long mmcr1;
  38         unsigned long mmcra;
  39 #endif
  40         unsigned long enable_kernel;
  41         unsigned long enable_user;
  42 #ifdef __powerpc64__
  43         unsigned long backtrace_spinlocks;
  44 #endif
  45 };
  46
  47 /* Per-arch configuration */
  48 struct op_powerpc_model {
  49         void (*reg_setup) (struct op_counter_config *,
  50                            struct op_system_config *,
  51                            int num_counters);
  52 #ifdef __powerpc64__
  53         void (*cpu_setup) (void *);
  54 #endif
  55         void (*start) (struct op_counter_config *);
  56         void (*stop) (void);
  57         void (*handle_interrupt) (struct pt_regs *,
  58                                   struct op_counter_config *);
  59         int num_counters;
  60 };
  61
  62 #ifdef __powerpc64__
  63 extern struct op_powerpc_model op_model_rs64;
  64 extern struct op_powerpc_model op_model_power4;
  65
  66 static inline unsigned int ctr_read(unsigned int i)
  67 {
  68         switch(i) {
  69         case 0:
  70                 return mfspr(SPRN_PMC1);
  71         case 1:
  72                 return mfspr(SPRN_PMC2);
  73         case 2:
  74                 return mfspr(SPRN_PMC3);
  75         case 3:
  76                 return mfspr(SPRN_PMC4);
  77         case 4:
  78                 return mfspr(SPRN_PMC5);
  79         case 5:
  80                 return mfspr(SPRN_PMC6);
  81         case 6:
  82                 return mfspr(SPRN_PMC7);
  83         case 7:
  84                 return mfspr(SPRN_PMC8);
  85         default:
  86                 return 0;
  87         }
  88 }
  89
  90 static inline void ctr_write(unsigned int i, unsigned int val)
  91 {
  92         switch(i) {
  93         case 0:
  94                 mtspr(SPRN_PMC1, val);
  95                 break;
  96         case 1:
  97                 mtspr(SPRN_PMC2, val);
  98                 break;
  99         case 2:
 100                 mtspr(SPRN_PMC3, val);
 101                 break;
 102         case 3:
 103                 mtspr(SPRN_PMC4, val);
 104                 break;
 105         case 4:
 106                 mtspr(SPRN_PMC5, val);
 107                 break;
 108         case 5:
 109                 mtspr(SPRN_PMC6, val);
 110                 break;
 111         case 6:
 112                 mtspr(SPRN_PMC7, val);
 113                 break;
 114         case 7:
 115                 mtspr(SPRN_PMC8, val);
 116                 break;
 117         default:
 118                 break;
 119         }
 120 }
 121 #endif /* __powerpc64__ */
 122
 123 #endif /* _ASM_POWERPC_OPROFILE_IMPL_H */