diff options
Diffstat (limited to 'arch/arc/kernel/irq.c')
| -rw-r--r-- | arch/arc/kernel/irq.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/arc/kernel/irq.c b/arch/arc/kernel/irq.c new file mode 100644 index 000000000..62b185057 --- /dev/null +++ b/arch/arc/kernel/irq.c @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2011-12 Synopsys, Inc. (www.synopsys.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/interrupt.h> +#include <linux/irqchip.h> +#include <asm/mach_desc.h> +#include <asm/smp.h> + +/* + * Late Interrupt system init called from start_kernel for Boot CPU only + * + * Since slab must already be initialized, platforms can start doing any + * needed request_irq( )s + */ +void __init init_IRQ(void) +{ + /* + * process the entire interrupt tree in one go + * Any external intc will be setup provided DT chains them + * properly + */ + irqchip_init(); + +#ifdef CONFIG_SMP + /* a SMP H/w block could do IPI IRQ request here */ + if (plat_smp_ops.init_per_cpu) + plat_smp_ops.init_per_cpu(smp_processor_id()); +#endif + + if (machine_desc->init_per_cpu) + machine_desc->init_per_cpu(smp_processor_id()); +} + +/* + * "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 + */ +void arch_do_IRQ(unsigned int hwirq, struct pt_regs *regs) +{ + handle_domain_irq(NULL, hwirq, regs); +} |