From: Noam Camus <no...@ezchip.com>
ARC uses hwirq at arch_do_IRQ() to pass into generic_handle_irq().
This is wrong since we need first to reverse map it into virq.
Happily, if we use handle_domain_irq() we get all we need.
Just like ARM I created a pointer to handler that should be filled
by an interrupt controller driver from driver/irqchip/
Signed-off-by: Noam Camus <no...@ezchip.com>
---
arch/arc/Kconfig | 1 +
arch/arc/include/asm/irq.h | 5 +++++
arch/arc/kernel/irq.c | 14 ++++++++++++++
3 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 7be1020..079946e 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -32,6 +32,7 @@ config ARC
select HAVE_OPROFILE
select HAVE_PERF_EVENTS
select IRQ_DOMAIN
+ select HANDLE_DOMAIN_IRQ if ARC_PLAT_EZNPS
select MODULES_USE_ELF_RELA
select NO_BOOTMEM
select OF
diff --git a/arch/arc/include/asm/irq.h b/arch/arc/include/asm/irq.h
index c5f8f0f..64226c9 100644
--- a/arch/arc/include/asm/irq.h
+++ b/arch/arc/include/asm/irq.h
@@ -36,4 +36,9 @@ void arc_request_percpu_irq(int irq, int cpu,
irqreturn_t (*isr)(int irq, void *dev),
const char *irq_nm, void *percpu_dev);
+#ifdef CONFIG_HANDLE_DOMAIN_IRQ
+extern void set_handle_irq(void (*handle_irq)(unsigned int hwirq,
+ struct pt_regs *));
+#endif
+
#endif
diff --git a/arch/arc/kernel/irq.c b/arch/arc/kernel/irq.c
index ba17f85..7ae5411 100644
--- a/arch/arc/kernel/irq.c
+++ b/arch/arc/kernel/irq.c
@@ -41,6 +41,7 @@ void __init init_IRQ(void)
* "C" Entry point for any ARC ISR, called from low level vector handler
* @irq is the vector number read from ICAUSE reg of on-chip intc
*/
+#ifndef CONFIG_HANDLE_DOMAIN_IRQ
void arch_do_IRQ(unsigned int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
@@ -50,6 +51,19 @@ void arch_do_IRQ(unsigned int irq, struct pt_regs *regs)
irq_exit();
set_irq_regs(old_regs);
}
+#else
+void (*handle_arch_irq)(unsigned int hwirq, struct pt_regs *) = NULL;
+void arch_do_IRQ(unsigned int irq, struct pt_regs *regs)
+{
+ handle_arch_irq(irq, regs);
+}
+
+void __init set_handle_irq(void (*handle_irq)(unsigned int hwirq,
+ struct pt_regs *))
+{
+ handle_arch_irq = handle_irq;
+}
+#endif
/*
* API called for requesting percpu interrupts - called by each CPU
--
1.7.1
_______________________________________________
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
