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oprofile_impl.h

/*
 * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
 *
 * Based on alpha version.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#ifndef _ASM_POWERPC_OPROFILE_IMPL_H
#define _ASM_POWERPC_OPROFILE_IMPL_H
#ifdef __KERNEL__

#define OP_MAX_COUNTER 8

/* Per-counter configuration as set via oprofilefs.  */
struct op_counter_config {
      unsigned long enabled;
      unsigned long event;
      unsigned long count;
      /* Classic doesn't support per-counter user/kernel selection */
      unsigned long kernel;
      unsigned long user;
      unsigned long unit_mask;
};

/* System-wide configuration as set via oprofilefs.  */
struct op_system_config {
#ifdef CONFIG_PPC64
      unsigned long mmcr0;
      unsigned long mmcr1;
      unsigned long mmcra;
#endif
      unsigned long enable_kernel;
      unsigned long enable_user;
};

/* Per-arch configuration */
struct op_powerpc_model {
      int (*reg_setup) (struct op_counter_config *,
                     struct op_system_config *,
                     int num_counters);
      int  (*cpu_setup) (struct op_counter_config *);
      int  (*start) (struct op_counter_config *);
      int  (*global_start) (struct op_counter_config *);
      void (*stop) (void);
      void (*global_stop) (void);
      int (*sync_start)(void);
      int (*sync_stop)(void);
      void (*handle_interrupt) (struct pt_regs *,
                          struct op_counter_config *);
      int num_counters;
};

extern struct op_powerpc_model op_model_fsl_emb;
extern struct op_powerpc_model op_model_rs64;
extern struct op_powerpc_model op_model_power4;
extern struct op_powerpc_model op_model_7450;
extern struct op_powerpc_model op_model_cell;
extern struct op_powerpc_model op_model_pa6t;


/* All the classic PPC parts use these */
static inline unsigned int classic_ctr_read(unsigned int i)
{
      switch(i) {
      case 0:
            return mfspr(SPRN_PMC1);
      case 1:
            return mfspr(SPRN_PMC2);
      case 2:
            return mfspr(SPRN_PMC3);
      case 3:
            return mfspr(SPRN_PMC4);
      case 4:
            return mfspr(SPRN_PMC5);
      case 5:
            return mfspr(SPRN_PMC6);

/* No PPC32 chip has more than 6 so far */
#ifdef CONFIG_PPC64
      case 6:
            return mfspr(SPRN_PMC7);
      case 7:
            return mfspr(SPRN_PMC8);
#endif
      default:
            return 0;
      }
}

static inline void classic_ctr_write(unsigned int i, unsigned int val)
{
      switch(i) {
      case 0:
            mtspr(SPRN_PMC1, val);
            break;
      case 1:
            mtspr(SPRN_PMC2, val);
            break;
      case 2:
            mtspr(SPRN_PMC3, val);
            break;
      case 3:
            mtspr(SPRN_PMC4, val);
            break;
      case 4:
            mtspr(SPRN_PMC5, val);
            break;
      case 5:
            mtspr(SPRN_PMC6, val);
            break;

/* No PPC32 chip has more than 6, yet */
#ifdef CONFIG_PPC64
      case 6:
            mtspr(SPRN_PMC7, val);
            break;
      case 7:
            mtspr(SPRN_PMC8, val);
            break;
#endif
      default:
            break;
      }
}


extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);

#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_OPROFILE_IMPL_H */

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