AcoSail/kernel_optimize_test
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kernel_optimize_test/arch/sparc/kernel/sun4c_irq.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

247 lines
6.4 KiB
C
Raw Blame History

/* sun4c_irq.c
* arch/sparc/kernel/sun4c_irq.c:
*
* djhr: Hacked out of irq.c into a CPU dependent version.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
* Copyright (C) 1995 Pete A. Zaitcev (zaitcev@yahoo.com)
* Copyright (C) 1996 Dave Redman (djhr@tadpole.co.uk)
*/
#include <linux/errno.h>
#include <linux/linkage.h>
#include <linux/kernel_stat.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <asm/ptrace.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/psr.h>
#include <asm/vaddrs.h>
#include <asm/timer.h>
#include <asm/openprom.h>
#include <asm/oplib.h>
#include <asm/traps.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/sun4paddr.h>
#include <asm/idprom.h>
#include <asm/machines.h>
#include <asm/sbus.h>
#if 0
static struct resource sun4c_timer_eb = { "sun4c_timer" };
static struct resource sun4c_intr_eb = { "sun4c_intr" };
#endif
/* Pointer to the interrupt enable byte
*
* Dave Redman (djhr@tadpole.co.uk)
* What you may not be aware of is that entry.S requires this variable.
*
* --- linux_trap_nmi_sun4c --
*
* so don't go making it static, like I tried. sigh.
*/
unsigned char *interrupt_enable = NULL;
static int sun4c_pil_map[] = { 0, 1, 2, 3, 5, 7, 8, 9 };
unsigned int sun4c_sbint_to_irq(struct sbus_dev *sdev, unsigned int sbint)
{
if (sbint >= sizeof(sun4c_pil_map)) {
printk(KERN_ERR "%s: bogus SBINT %d\n", sdev->prom_name, sbint);
BUG();
}
return sun4c_pil_map[sbint];
}
static void sun4c_disable_irq(unsigned int irq_nr)
{
unsigned long flags;
unsigned char current_mask, new_mask;
local_irq_save(flags);
irq_nr &= (NR_IRQS - 1);
current_mask = *interrupt_enable;
switch(irq_nr) {
case 1:
new_mask = ((current_mask) & (~(SUN4C_INT_E1)));
break;
case 8:
new_mask = ((current_mask) & (~(SUN4C_INT_E8)));
break;
case 10:
new_mask = ((current_mask) & (~(SUN4C_INT_E10)));
break;
case 14:
new_mask = ((current_mask) & (~(SUN4C_INT_E14)));
break;
default:
local_irq_restore(flags);
return;
}
*interrupt_enable = new_mask;
local_irq_restore(flags);
}
static void sun4c_enable_irq(unsigned int irq_nr)
{
unsigned long flags;
unsigned char current_mask, new_mask;
local_irq_save(flags);
irq_nr &= (NR_IRQS - 1);
current_mask = *interrupt_enable;
switch(irq_nr) {
case 1:
new_mask = ((current_mask) | SUN4C_INT_E1);
break;
case 8:
new_mask = ((current_mask) | SUN4C_INT_E8);
break;
case 10:
new_mask = ((current_mask) | SUN4C_INT_E10);
break;
case 14:
new_mask = ((current_mask) | SUN4C_INT_E14);
break;
default:
local_irq_restore(flags);
return;
}
*interrupt_enable = new_mask;
local_irq_restore(flags);
}
#define TIMER_IRQ 10 /* Also at level 14, but we ignore that one. */
#define PROFILE_IRQ 14 /* Level14 ticker.. used by OBP for polling */
volatile struct sun4c_timer_info *sun4c_timers;
#ifdef CONFIG_SUN4
/* This is an ugly hack to work around the
current timer code, and make it work with
the sun4/260 intersil
*/
volatile struct sun4c_timer_info sun4_timer;
#endif
static void sun4c_clear_clock_irq(void)
{
volatile unsigned int clear_intr;
#ifdef CONFIG_SUN4
if (idprom->id_machtype == (SM_SUN4 | SM_4_260))
clear_intr = sun4_timer.timer_limit10;
else
#endif
clear_intr = sun4c_timers->timer_limit10;
}
static void sun4c_clear_profile_irq(int cpu)
{
/* Errm.. not sure how to do this.. */
}
static void sun4c_load_profile_irq(int cpu, unsigned int limit)
{
/* Errm.. not sure how to do this.. */
}
static void __init sun4c_init_timers(irq_handler_t counter_fn)
{
int irq;
/* Map the Timer chip, this is implemented in hardware inside
* the cache chip on the sun4c.
*/
#ifdef CONFIG_SUN4
if (idprom->id_machtype == (SM_SUN4 | SM_4_260))
sun4c_timers = &sun4_timer;
else
#endif
sun4c_timers = ioremap(SUN_TIMER_PHYSADDR,
sizeof(struct sun4c_timer_info));
/* Have the level 10 timer tick at 100HZ. We don't touch the
* level 14 timer limit since we are letting the prom handle
* them until we have a real console driver so L1-A works.
*/
sun4c_timers->timer_limit10 = (((1000000/HZ) + 1) << 10);
master_l10_counter = &sun4c_timers->cur_count10;
master_l10_limit = &sun4c_timers->timer_limit10;
irq = request_irq(TIMER_IRQ,
counter_fn,
(IRQF_DISABLED | SA_STATIC_ALLOC),
"timer", NULL);
if (irq) {
prom_printf("time_init: unable to attach IRQ%d\n",TIMER_IRQ);
prom_halt();
}
#if 0
/* This does not work on 4/330 */
sun4c_enable_irq(10);
#endif
claim_ticker14(NULL, PROFILE_IRQ, 0);
}
#ifdef CONFIG_SMP
static void sun4c_nop(void) {}
#endif
void __init sun4c_init_IRQ(void)
{
struct linux_prom_registers int_regs[2];
int ie_node;
if (ARCH_SUN4) {
interrupt_enable = (char *)
ioremap(sun4_ie_physaddr, PAGE_SIZE);
} else {
struct resource phyres;
ie_node = prom_searchsiblings (prom_getchild(prom_root_node),
"interrupt-enable");
if(ie_node == 0)
panic("Cannot find /interrupt-enable node");
/* Depending on the "address" property is bad news... */
interrupt_enable = NULL;
if (prom_getproperty(ie_node, "reg", (char *) int_regs,
sizeof(int_regs)) != -1) {
memset(&phyres, 0, sizeof(struct resource));
phyres.flags = int_regs[0].which_io;
phyres.start = int_regs[0].phys_addr;
interrupt_enable = (char *) sbus_ioremap(&phyres, 0,
int_regs[0].reg_size, "sun4c_intr");
}
}
if (!interrupt_enable)
panic("Cannot map interrupt_enable");
BTFIXUPSET_CALL(sbint_to_irq, sun4c_sbint_to_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(enable_irq, sun4c_enable_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(disable_irq, sun4c_disable_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(enable_pil_irq, sun4c_enable_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(disable_pil_irq, sun4c_disable_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(clear_clock_irq, sun4c_clear_clock_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(clear_profile_irq, sun4c_clear_profile_irq, BTFIXUPCALL_NOP);
BTFIXUPSET_CALL(load_profile_irq, sun4c_load_profile_irq, BTFIXUPCALL_NOP);
sparc_init_timers = sun4c_init_timers;
#ifdef CONFIG_SMP
BTFIXUPSET_CALL(set_cpu_int, sun4c_nop, BTFIXUPCALL_NOP);
BTFIXUPSET_CALL(clear_cpu_int, sun4c_nop, BTFIXUPCALL_NOP);
BTFIXUPSET_CALL(set_irq_udt, sun4c_nop, BTFIXUPCALL_NOP);
#endif
*interrupt_enable = (SUN4C_INT_ENABLE);
/* Cannot enable interrupts until OBP ticker is disabled. */
}
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