arch/powerpc/include/asm/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         int (*reg_setup) (struct op_counter_config *,
  43                            struct op_system_config *,
  44                            int num_counters);
  45         int  (*cpu_setup) (struct op_counter_config *);
  46         int  (*start) (struct op_counter_config *);
  47         int  (*global_start) (struct op_counter_config *);
  48         void (*stop) (void);
  49         void (*global_stop) (void);
  50         int (*sync_start)(void);
  51         int (*sync_stop)(void);
  52         void (*handle_interrupt) (struct pt_regs *,
  53                                   struct op_counter_config *);
  54         int num_counters;
  55 };
  56
  57 extern struct op_powerpc_model op_model_fsl_emb;
  58 extern struct op_powerpc_model op_model_rs64;
  59 extern struct op_powerpc_model op_model_power4;
  60 extern struct op_powerpc_model op_model_7450;
  61 extern struct op_powerpc_model op_model_cell;
  62 extern struct op_powerpc_model op_model_pa6t;
  63
  64
  65 /* All the classic PPC parts use these */
  66 static inline unsigned int classic_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
  82 /* No PPC32 chip has more than 6 so far */
  83 #ifdef CONFIG_PPC64
  84         case 6:
  85                 return mfspr(SPRN_PMC7);
  86         case 7:
  87                 return mfspr(SPRN_PMC8);
  88 #endif
  89         default:
  90                 return 0;
  91         }
  92 }
  93
  94 static inline void classic_ctr_write(unsigned int i, unsigned int val)
  95 {
  96         switch(i) {
  97         case 0:
  98                 mtspr(SPRN_PMC1, val);
  99                 break;
 100         case 1:
 101                 mtspr(SPRN_PMC2, val);
 102                 break;
 103         case 2:
 104                 mtspr(SPRN_PMC3, val);
 105                 break;
 106         case 3:
 107                 mtspr(SPRN_PMC4, val);
 108                 break;
 109         case 4:
 110                 mtspr(SPRN_PMC5, val);
 111                 break;
 112         case 5:
 113                 mtspr(SPRN_PMC6, val);
 114                 break;
 115
 116 /* No PPC32 chip has more than 6, yet */
 117 #ifdef CONFIG_PPC64
 118         case 6:
 119                 mtspr(SPRN_PMC7, val);
 120                 break;
 121         case 7:
 122                 mtspr(SPRN_PMC8, val);
 123                 break;
 124 #endif
 125         default:
 126                 break;
 127         }
 128 }
 129
 130
 131 extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
 132
 133 #endif /* __KERNEL__ */
 134 #endif /* _ASM_POWERPC_OPROFILE_IMPL_H */