arm64: Use irqchip_init() for interrupt controller initialisation
This patch uses the generic irqchip_init() function for initialising the
interrupt controller on arm64. It also adds several definitions required
by the ARM GIC irqchip driver but does not enable ARM_GIC yet.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm64/include/asm/exception.h b/arch/arm64/include/asm/exception.h
index ac63519..0303705 100644
--- a/arch/arm64/include/asm/exception.h
+++ b/arch/arm64/include/asm/exception.h
@@ -19,5 +19,6 @@
#define __ASM_EXCEPTION_H
#define __exception __attribute__((section(".exception.text")))
+#define __exception_irq_entry __exception
#endif /* __ASM_EXCEPTION_H */
diff --git a/arch/arm64/include/asm/hardirq.h b/arch/arm64/include/asm/hardirq.h
index 5075463..990c051 100644
--- a/arch/arm64/include/asm/hardirq.h
+++ b/arch/arm64/include/asm/hardirq.h
@@ -49,4 +49,9 @@
extern void handle_IRQ(unsigned int, struct pt_regs *);
+/*
+ * No arch-specific IRQ flags.
+ */
+#define set_irq_flags(irq, flags)
+
#endif /* __ASM_HARDIRQ_H */
diff --git a/arch/arm64/include/asm/irq.h b/arch/arm64/include/asm/irq.h
index a4e1cad..0332fc0 100644
--- a/arch/arm64/include/asm/irq.h
+++ b/arch/arm64/include/asm/irq.h
@@ -4,5 +4,6 @@
#include <asm-generic/irq.h>
extern void (*handle_arch_irq)(struct pt_regs *);
+extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));
#endif
diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c
index 0373c66..ecb3354 100644
--- a/arch/arm64/kernel/irq.c
+++ b/arch/arm64/kernel/irq.c
@@ -25,7 +25,7 @@
#include <linux/irq.h>
#include <linux/smp.h>
#include <linux/init.h>
-#include <linux/of_irq.h>
+#include <linux/irqchip.h>
#include <linux/seq_file.h>
#include <linux/ratelimit.h>
@@ -67,18 +67,17 @@
set_irq_regs(old_regs);
}
-/*
- * Interrupt controllers supported by the kernel.
- */
-static const struct of_device_id intctrl_of_match[] __initconst = {
- /* IRQ controllers { .compatible, .data } info to go here */
- {}
-};
+void __init set_handle_irq(void (*handle_irq)(struct pt_regs *))
+{
+ if (handle_arch_irq)
+ return;
+
+ handle_arch_irq = handle_irq;
+}
void __init init_IRQ(void)
{
- of_irq_init(intctrl_of_match);
-
+ irqchip_init();
if (!handle_arch_irq)
panic("No interrupt controller found.");
}