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[ARM] 3686/1: ARM: arm/common: convert irq handling

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Patch from Thomas Gleixner

From: Thomas Gleixner <tglx@linutronix.de>

Convert the files in arch/arm/common to use the generic
irq handling functions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Thomas Gleixner 2006-07-01 22:32:14 +01:00 committed by Russell King
parent 4a2581a080
commit c4bfa28aec
3 changed files with 20 additions and 5 deletions
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18
arch/arm/common/gic.c
View File

@ -33,6 +33,7 @@
static void __iomem *gic_dist_base;
static void __iomem *gic_cpu_base;
static DEFINE_SPINLOCK(irq_controller_lock);
/*
* Routines to acknowledge, disable and enable interrupts
@ -52,32 +53,45 @@ static void __iomem *gic_cpu_base;
static void gic_ack_irq(unsigned int irq)
{
u32 mask = 1 << (irq % 32);
spin_lock(&irq_controller_lock);
writel(mask, gic_dist_base + GIC_DIST_ENABLE_CLEAR + (irq / 32) * 4);
writel(irq, gic_cpu_base + GIC_CPU_EOI);
spin_unlock(&irq_controller_lock);
}
static void gic_mask_irq(unsigned int irq)
{
u32 mask = 1 << (irq % 32);
spin_lock(&irq_controller_lock);
writel(mask, gic_dist_base + GIC_DIST_ENABLE_CLEAR + (irq / 32) * 4);
spin_unlock(&irq_controller_lock);
}
static void gic_unmask_irq(unsigned int irq)
{
u32 mask = 1 << (irq % 32);
spin_lock(&irq_controller_lock);
writel(mask, gic_dist_base + GIC_DIST_ENABLE_SET + (irq / 32) * 4);
spin_unlock(&irq_controller_lock);
}
#ifdef CONFIG_SMP
static void gic_set_cpu(struct irqdesc *desc, unsigned int irq, unsigned int cpu)
static void gic_set_cpu(unsigned int irq, cpumask_t mask_val)
{
void __iomem *reg = gic_dist_base + GIC_DIST_TARGET + (irq & ~3);
unsigned int shift = (irq % 4) * 8;
unsigned int cpu = first_cpu(mask_val);
u32 val;
spin_lock(&irq_controller_lock);
irq_desc[irq].cpu = cpu;
val = readl(reg) & ~(0xff << shift);
val |= 1 << (cpu + shift);
writel(val, reg);
spin_unlock(&irq_controller_lock);
}
#endif
@ -86,7 +100,7 @@ static struct irqchip gic_chip = {
.mask = gic_mask_irq,
.unmask = gic_unmask_irq,
#ifdef CONFIG_SMP
.set_cpu = gic_set_cpu,
.set_affinity = gic_set_cpu,
#endif
};

6
arch/arm/common/sa1111.c
View File

@ -150,7 +150,7 @@ static void
sa1111_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
{
unsigned int stat0, stat1, i;
void __iomem *base = desc->data;
void __iomem *base = get_irq_data(irq);
stat0 = sa1111_readl(base + SA1111_INTSTATCLR0);
stat1 = sa1111_readl(base + SA1111_INTSTATCLR1);
@ -168,11 +168,11 @@ sa1111_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
for (i = IRQ_SA1111_START; stat0; i++, stat0 >>= 1)
if (stat0 & 1)
do_edge_IRQ(i, irq_desc + i, regs);
handle_edge_irq(i, irq_desc + i, regs);
for (i = IRQ_SA1111_START + 32; stat1; i++, stat1 >>= 1)
if (stat1 & 1)
do_edge_IRQ(i, irq_desc + i, regs);
handle_edge_irq(i, irq_desc + i, regs);
/* For level-based interrupts */
desc->chip->unmask(irq);

1
arch/arm/common/time-acorn.c
View File

@ -16,6 +16,7 @@
#include <linux/timex.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm/hardware.h>
#include <asm/io.h>