LXR linux/arch/powerpc/include/asm/oprofile

   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.  */
  19struct 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.  */
  30struct 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 */
  47struct 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
  63extern struct op_powerpc_model op_model_fsl_emb;
  64extern struct op_powerpc_model op_model_power4;
  65extern struct op_powerpc_model op_model_7450;
  66extern struct op_powerpc_model op_model_cell;
  67extern struct op_powerpc_model op_model_pa6t;
  68
  69
  70/* All the classic PPC parts use these */
  71static 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
  99static 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
 136extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
 137
 138#endif /* __KERNEL__ */
 139#endif /* _ASM_POWERPC_OPROFILE_IMPL_H */
 140