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 #ifdef __KERNEL__
  15
  16 #define OP_MAX_COUNTER 8
  17
  18 /* Per-counter configuration as set via oprofilefs.  */
  19 struct op_counter_config {
  20         unsigned long enabled;
  21         unsigned long event;
  22         unsigned long count;
  23         /* Classic doesn't support per-counter user/kernel selection */
  24         unsigned long kernel;
  25         unsigned long user;
  26         unsigned long unit_mask;
  27 };
  28
  29 /* System-wide configuration as set via oprofilefs.  */
  30 struct op_system_config {
  31 #ifdef CONFIG_PPC64
  32         unsigned long mmcr0;
  33         unsigned long mmcr1;
  34         unsigned long mmcra;
  35 #endif
  36         unsigned long enable_kernel;
  37         unsigned long enable_user;
  38 };
  39
  40 /* Per-arch configuration */
  41 struct op_powerpc_model {
  42         void (*reg_setup) (struct op_counter_config *,
  43                            struct op_system_config *,
  44                            int num_counters);
  45         void (*cpu_setup) (struct op_counter_config *);
  46         void (*start) (struct op_counter_config *);
  47         void (*global_start) (struct op_counter_config *);
  48         void (*stop) (void);
  49         void (*global_stop) (void);
  50         void (*handle_interrupt) (struct pt_regs *,
  51                                   struct op_counter_config *);
  52         int num_counters;
  53 };
  54
  55 extern struct op_powerpc_model op_model_fsl_booke;
  56 extern struct op_powerpc_model op_model_rs64;
  57 extern struct op_powerpc_model op_model_power4;
  58 extern struct op_powerpc_model op_model_7450;
  59 extern struct op_powerpc_model op_model_cell;
  60
  61 /* All the classic PPC parts use these */
  62 static inline unsigned int classic_ctr_read(unsigned int i)
  63 {
  64         switch(i) {
  65         case 0:
  66                 return mfspr(SPRN_PMC1);
  67         case 1:
  68                 return mfspr(SPRN_PMC2);
  69         case 2:
  70                 return mfspr(SPRN_PMC3);
  71         case 3:
  72                 return mfspr(SPRN_PMC4);
  73         case 4:
  74                 return mfspr(SPRN_PMC5);
  75         case 5:
  76                 return mfspr(SPRN_PMC6);
  77
  78 /* No PPC32 chip has more than 6 so far */
  79 #ifdef CONFIG_PPC64
  80         case 6:
  81                 return mfspr(SPRN_PMC7);
  82         case 7:
  83                 return mfspr(SPRN_PMC8);
  84 #endif
  85         default:
  86                 return 0;
  87         }
  88 }
  89
  90 static inline void classic_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
 112 /* No PPC32 chip has more than 6, yet */
 113 #ifdef CONFIG_PPC64
 114         case 6:
 115                 mtspr(SPRN_PMC7, val);
 116                 break;
 117         case 7:
 118                 mtspr(SPRN_PMC8, val);
 119                 break;
 120 #endif
 121         default:
 122                 break;
 123         }
 124 }
 125
 126
 127 extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
 128
 129 #endif /* __KERNEL__ */
 130 #endif /* _ASM_POWERPC_OPROFILE_IMPL_H */