/* $Id: ppc_setup.c,v 1.1.2.4 2006/10/15 09:22:16 mikpe Exp $

 * Performance-monitoring counters driver.

 * PPC32-specific kernel-resident code.

 *

 * Copyright (C) 2004-2006  Mikael Pettersson

 */

#include <linux/version.h>

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)

#include <linux/config.h>

#endif

#include <linux/module.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/interrupt.h>

#include <asm/processor.h>

#include <asm/perfctr.h>

#include "ppc_compat.h"

#include "compat.h"

#ifdef CONFIG_PERFCTR_INTERRUPT_SUPPORT

static void perfctr_default_ihandler(unsigned long pc)

{

}

static perfctr_ihandler_t perfctr_ihandler = perfctr_default_ihandler;

void do_perfctr_interrupt(struct pt_regs *regs)

{

	preempt_disable();

	(*perfctr_ihandler)(instruction_pointer(regs));

	preempt_enable_no_resched();

}

int perfctr_reserve_pmc_hardware(void)

{

	return reserve_pmc_hardware(do_perfctr_interrupt);

}

void perfctr_cpu_set_ihandler(perfctr_ihandler_t ihandler)

{

	perfctr_ihandler = ihandler ? ihandler : perfctr_default_ihandler;

}

#ifdef CONFIG_PERFCTR_MODULE

EXPORT_SYMBOL(perfctr_reserve_pmc_hardware);

EXPORT_SYMBOL(perfctr_cpu_set_ihandler);

#endif /* MODULE */

#endif /* CONFIG_PERFCTR_INTERRUPT_SUPPORT */