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 #ifdef CONFIG_PPC64
  39         unsigned long backtrace_spinlocks;
  40 #endif
  41 };
  42
  43 /* Per-arch configuration */
  44 struct op_powerpc_model {
  45         void (*reg_setup) (struct op_counter_config *,
  46                            struct op_system_config *,
  47                            int num_counters);
  48         void (*cpu_setup) (void *);
  49         void (*start) (struct op_counter_config *);
  50         void (*stop) (void);
  51         void (*handle_interrupt) (struct pt_regs *,
  52                                   struct op_counter_config *);
  53         int num_counters;
  54 };
  55
  56 extern struct op_powerpc_model op_model_fsl_booke;
  57 extern struct op_powerpc_model op_model_rs64;
  58 extern struct op_powerpc_model op_model_power4;
  59 extern struct op_powerpc_model op_model_7450;
  60
  61 #ifndef CONFIG_FSL_BOOKE
  62
  63 /* All the classic PPC parts use these */
  64 static inline unsigned int ctr_read(unsigned int i)
  65 {
  66         switch(i) {
  67         case 0:
  68                 return mfspr(SPRN_PMC1);
  69         case 1:
  70                 return mfspr(SPRN_PMC2);
  71         case 2:
  72                 return mfspr(SPRN_PMC3);
  73         case 3:
  74                 return mfspr(SPRN_PMC4);
  75         case 4:
  76                 return mfspr(SPRN_PMC5);
  77         case 5:
  78                 return mfspr(SPRN_PMC6);
  79
  80 /* No PPC32 chip has more than 6 so far */
  81 #ifdef CONFIG_PPC64
  82         case 6:
  83                 return mfspr(SPRN_PMC7);
  84         case 7:
  85                 return mfspr(SPRN_PMC8);
  86 #endif
  87         default:
  88                 return 0;
  89         }
  90 }
  91
  92 static inline void ctr_write(unsigned int i, unsigned int val)
  93 {
  94         switch(i) {
  95         case 0:
  96                 mtspr(SPRN_PMC1, val);
  97                 break;
  98         case 1:
  99                 mtspr(SPRN_PMC2, val);
 100                 break;
 101         case 2:
 102                 mtspr(SPRN_PMC3, val);
 103                 break;
 104         case 3:
 105                 mtspr(SPRN_PMC4, val);
 106                 break;
 107         case 4:
 108                 mtspr(SPRN_PMC5, val);
 109                 break;
 110         case 5:
 111                 mtspr(SPRN_PMC6, val);
 112                 break;
 113
 114 /* No PPC32 chip has more than 6, yet */
 115 #ifdef CONFIG_PPC64
 116         case 6:
 117                 mtspr(SPRN_PMC7, val);
 118                 break;
 119         case 7:
 120                 mtspr(SPRN_PMC8, val);
 121                 break;
 122 #endif
 123         default:
 124                 break;
 125         }
 126 }
 127 #endif /* !CONFIG_FSL_BOOKE */
 128
 129 extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
 130
 131 #endif /* __KERNEL__ */
 132 #endif /* _ASM_POWERPC_OPROFILE_IMPL_H */