Pull novell-bugzilla-156426 into release branch

[pandora-kernel.git] / arch / mips / sgi-ip27 / ip27-irq.c

diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c
index 5d374e6..2e643d2 100644 (file)
--- a/arch/mips/sgi-ip27/ip27-irq.c
+++ b/arch/mips/sgi-ip27/ip27-irq.c
@@ -5,6 +5,9 @@
  * 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>
@@ -14,11 +17,11 @@
 #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>
@@ -37,13 +40,6 @@
 #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
@@ -92,12 +88,9 @@ static inline int find_level(cpuid_t *cpunum, int irq)
 {
        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;
@@ -137,7 +130,7 @@ static int ms1bit(unsigned long x)
  * 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;
@@ -178,7 +171,7 @@ void ip27_do_irq_mask0(struct pt_regs *regs)
        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;
@@ -203,12 +196,12 @@ void ip27_do_irq_mask1(struct pt_regs *regs)
        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());
 }
@@ -265,7 +258,7 @@ static unsigned int startup_bridge_irq(unsigned int irq)
        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
@@ -308,7 +301,7 @@ static void shutdown_bridge_irq(unsigned int irq)
        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);
 
        /*
@@ -428,9 +421,26 @@ 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)