linux/arch/sparc/kernel/tick14.c
David Howells 40220c1a19 IRQ: Use the new typedef for interrupt handler function pointers
Use the new typedef for interrupt handler function pointers rather than
actually spelling out the full thing each time.  This was scripted with the
following small shell script:

#!/bin/sh
egrep -nHrl -e 'irqreturn_t[ 	]*[(][*]' $* |
while read i
do
    echo $i
    perl -pi -e 's/irqreturn_t\s*[(]\s*[*]\s*([_a-zA-Z0-9]*)\s*[)]\s*[(]\s*int\s*,\s*void\s*[*]\s*[)]/irq_handler_t \1/g' $i || exit $?
done

Signed-Off-By: David Howells <dhowells@redhat.com>
2006-10-09 12:19:47 +01:00

85 lines
1.8 KiB
C

/* tick14.c
* linux/arch/sparc/kernel/tick14.c
*
* Copyright (C) 1996 David Redman (djhr@tadpole.co.uk)
*
* This file handles the Sparc specific level14 ticker
* This is really useful for profiling OBP uses it for keyboard
* aborts and other stuff.
*
*
*/
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/timex.h>
#include <linux/interrupt.h>
#include <asm/oplib.h>
#include <asm/timer.h>
#include <asm/mostek.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/io.h>
extern unsigned long lvl14_save[5];
static unsigned long *linux_lvl14 = NULL;
static unsigned long obp_lvl14[4];
/*
* Call with timer IRQ closed.
* First time we do it with disable_irq, later prom code uses spin_lock_irq().
*/
void install_linux_ticker(void)
{
if (!linux_lvl14)
return;
linux_lvl14[0] = lvl14_save[0];
linux_lvl14[1] = lvl14_save[1];
linux_lvl14[2] = lvl14_save[2];
linux_lvl14[3] = lvl14_save[3];
}
void install_obp_ticker(void)
{
if (!linux_lvl14)
return;
linux_lvl14[0] = obp_lvl14[0];
linux_lvl14[1] = obp_lvl14[1];
linux_lvl14[2] = obp_lvl14[2];
linux_lvl14[3] = obp_lvl14[3];
}
void claim_ticker14(irq_handler_t handler,
int irq_nr, unsigned int timeout )
{
int cpu = smp_processor_id();
/* first we copy the obp handler instructions
*/
disable_irq(irq_nr);
if (!handler)
return;
linux_lvl14 = (unsigned long *)lvl14_save[4];
obp_lvl14[0] = linux_lvl14[0];
obp_lvl14[1] = linux_lvl14[1];
obp_lvl14[2] = linux_lvl14[2];
obp_lvl14[3] = linux_lvl14[3];
if (!request_irq(irq_nr,
handler,
(IRQF_DISABLED | SA_STATIC_ALLOC),
"counter14",
NULL)) {
install_linux_ticker();
load_profile_irq(cpu, timeout);
enable_irq(irq_nr);
}
}