* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
* Copyright (C) 1999 - 2001 Kanoj Sarcar
*/
+
+#undef DEBUG
+
#include <linux/config.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
-#include <linux/irq.h>
#include <linux/timex.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/smp_lock.h>
+#include <linux/kernel.h>
#include <linux/kernel_stat.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <asm/sn/hub.h>
#include <asm/sn/intr.h>
-#undef DEBUG_IRQ
-#ifdef DEBUG_IRQ
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif
-
/*
* Linux has a controller-independent x86 interrupt architecture.
* every controller has a 'controller-template', that is used
{
int cpu, i;
- for (cpu = 0; cpu <= NR_CPUS; cpu++) {
+ for_each_online_cpu(cpu) {
struct slice_data *si = cpu_data[cpu].data;
- if (!cpu_online(cpu))
- continue;
-
for (i = BASE_PCI_IRQ; i < LEVELS_PER_SLICE; i++)
if (si->level_to_irq[i] == irq) {
*cpunum = cpu;
* Kanoj 05.13.00
*/
-void ip27_do_irq_mask0(struct pt_regs *regs)
+static void ip27_do_irq_mask0(struct pt_regs *regs)
{
int irq, swlevel;
hubreg_t pend0, mask0;
LOCAL_HUB_L(PI_INT_PEND0);
}
-void ip27_do_irq_mask1(struct pt_regs *regs)
+static void ip27_do_irq_mask1(struct pt_regs *regs)
{
int irq, swlevel;
hubreg_t pend1, mask1;
LOCAL_HUB_L(PI_INT_PEND1);
}
-void ip27_prof_timer(struct pt_regs *regs)
+static void ip27_prof_timer(struct pt_regs *regs)
{
panic("CPU %d got a profiling interrupt", smp_processor_id());
}
-void ip27_hub_error(struct pt_regs *regs)
+static void ip27_hub_error(struct pt_regs *regs)
{
panic("CPU %d got a hub error interrupt", smp_processor_id());
}
bc = IRQ_TO_BRIDGE(irq);
bridge = bc->base;
- DBG("bridge_startup(): irq= 0x%x pin=%d\n", irq, pin);
+ pr_debug("bridge_startup(): irq= 0x%x pin=%d\n", irq, pin);
/*
* "map" irq to a swlevel greater than 6 since the first 6 bits
* of INT_PEND0 are taken
int pin, swlevel;
cpuid_t cpu;
- DBG("bridge_shutdown: irq 0x%x\n", irq);
+ pr_debug("bridge_shutdown: irq 0x%x\n", irq);
pin = SLOT_FROM_PCI_IRQ(irq);
/*
static unsigned long irq_map[NR_IRQS / BITS_PER_LONG];
-static int allocate_irqno(void)
+int allocate_irqno(void)
{
int irq;
irq_desc[irq].status = IRQ_DISABLED;
irq_desc[irq].action = 0;
irq_desc[irq].depth = 1;
- irq_desc[irq].handler = &bridge_irq_type;
+ irq_desc[irq].chip = &bridge_irq_type;
}
int __devinit request_bridge_irq(struct bridge_controller *bc)
return irq;
}
+extern void ip27_rt_timer_interrupt(struct pt_regs *regs);
+
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+ unsigned long pending = read_c0_cause() & read_c0_status();
+
+ if (pending & CAUSEF_IP4)
+ ip27_rt_timer_interrupt(regs);
+ else if (pending & CAUSEF_IP2) /* PI_INT_PEND_0 or CC_PEND_{A|B} */
+ ip27_do_irq_mask0(regs);
+ else if (pending & CAUSEF_IP3) /* PI_INT_PEND_1 */
+ ip27_do_irq_mask1(regs);
+ else if (pending & CAUSEF_IP5)
+ ip27_prof_timer(regs);
+ else if (pending & CAUSEF_IP6)
+ ip27_hub_error(regs);
+}
+
void __init arch_init_irq(void)
{
- set_except_vector(0, ip27_irq);
}
void install_ipi(void)