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 #ifdef CONFIG_OPROFILE_CELL
  36         /* Register for oprofile user tool to check cell kernel profiling
  37          * support.
  38          */
  39         unsigned long cell_support;
  40 #endif
  41 #endif
  42         unsigned long enable_kernel;
  43         unsigned long enable_user;
  44 };
  45
  46 /* Per-arch configuration */
  47 struct op_powerpc_model {
  48         int (*reg_setup) (struct op_counter_config *,
  49                            struct op_system_config *,
  50                            int num_counters);
  51         int  (*cpu_setup) (struct op_counter_config *);
  52         int  (*start) (struct op_counter_config *);
  53         int  (*global_start) (struct op_counter_config *);
  54         void (*stop) (void);
  55         void (*global_stop) (void);
  56         int (*sync_start)(void);
  57         int (*sync_stop)(void);
  58         void (*handle_interrupt) (struct pt_regs *,
  59                                   struct op_counter_config *);
  60         int num_counters;
  61 };
  62
  63 extern struct op_powerpc_model op_model_fsl_emb;
  64 extern struct op_powerpc_model op_model_power4;
  65 extern struct op_powerpc_model op_model_7450;
  66 extern struct op_powerpc_model op_model_cell;
  67 extern struct op_powerpc_model op_model_pa6t;
  68
  69
  70 /* All the classic PPC parts use these */
  71 static inline unsigned int classic_ctr_read(unsigned int i)
  72 {
  73         switch(i) {
  74         case 0:
  75                 return mfspr(SPRN_PMC1);
  76         case 1:
  77                 return mfspr(SPRN_PMC2);
  78         case 2:
  79                 return mfspr(SPRN_PMC3);
  80         case 3:
  81                 return mfspr(SPRN_PMC4);
  82         case 4:
  83                 return mfspr(SPRN_PMC5);
  84         case 5:
  85                 return mfspr(SPRN_PMC6);
  86
  87 /* No PPC32 chip has more than 6 so far */
  88 #ifdef CONFIG_PPC64
  89         case 6:
  90                 return mfspr(SPRN_PMC7);
  91         case 7:
  92                 return mfspr(SPRN_PMC8);
  93 #endif
  94         default:
  95                 return 0;
  96         }
  97 }
  98
  99 static inline void classic_ctr_write(unsigned int i, unsigned int val)
 100 {
 101         switch(i) {
 102         case 0:
 103                 mtspr(SPRN_PMC1, val);
 104                 break;
 105         case 1:
 106                 mtspr(SPRN_PMC2, val);
 107                 break;
 108         case 2:
 109                 mtspr(SPRN_PMC3, val);
 110                 break;
 111         case 3:
 112                 mtspr(SPRN_PMC4, val);
 113                 break;
 114         case 4:
 115                 mtspr(SPRN_PMC5, val);
 116                 break;
 117         case 5:
 118                 mtspr(SPRN_PMC6, val);
 119                 break;
 120
 121 /* No PPC32 chip has more than 6, yet */
 122 #ifdef CONFIG_PPC64
 123         case 6:
 124                 mtspr(SPRN_PMC7, val);
 125                 break;
 126         case 7:
 127                 mtspr(SPRN_PMC8, val);
 128                 break;
 129 #endif
 130         default:
 131                 break;
 132         }
 133 }
 134
 135
 136 extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
 137
 138 #endif /* __KERNEL__ */
 139 #endif /* _ASM_POWERPC_OPROFILE_IMPL_H */