Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 562e0027 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

ARM: GIC: Add global gic_handle_irq() function



Provide the GIC code with a low level handler that can be used
by platforms using CONFIG_MULTI_IRQ_HANDLER.

Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent baeeb822
Loading
Loading
Loading
Loading
+27 −0
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@
#include <linux/slab.h>

#include <asm/irq.h>
#include <asm/exception.h>
#include <asm/mach/irq.h>
#include <asm/hardware/gic.h>

@@ -272,6 +273,32 @@ static int gic_set_wake(struct irq_data *d, unsigned int on)
#define gic_set_wake	NULL
#endif

asmlinkage void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
{
	u32 irqstat, irqnr;
	struct gic_chip_data *gic = &gic_data[0];
	void __iomem *cpu_base = gic_data_cpu_base(gic);

	do {
		irqstat = readl_relaxed(cpu_base + GIC_CPU_INTACK);
		irqnr = irqstat & ~0x1c00;

		if (likely(irqnr > 15 && irqnr < 1021)) {
			irqnr = irq_domain_to_irq(&gic->domain, irqnr);
			handle_IRQ(irqnr, regs);
			continue;
		}
		if (irqnr < 16) {
			writel_relaxed(irqstat, cpu_base + GIC_CPU_EOI);
#ifdef CONFIG_SMP
			handle_IPI(irqnr, regs);
#endif
			continue;
		}
		break;
	} while (1);
}

static void gic_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
{
	struct gic_chip_data *chip_data = irq_get_handler_data(irq);
+1 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ void gic_init_bases(unsigned int, int, void __iomem *, void __iomem *,
		    u32 offset);
int gic_of_init(struct device_node *node, struct device_node *parent);
void gic_secondary_init(unsigned int);
void gic_handle_irq(struct pt_regs *regs);
void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
void gic_raise_softirq(const struct cpumask *mask, unsigned int irq);