| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011-12 Synopsys, Inc. (www.synopsys.com) |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | #include <linux/interrupt.h> |
| 11 | #include <linux/irqchip.h> |
| 12 | #include <asm/mach_desc.h> |
| 13 | #include <asm/smp.h> |
| 14 | |
| 15 | /* |
| 16 | * Late Interrupt system init called from start_kernel for Boot CPU only |
| 17 | * |
| 18 | * Since slab must already be initialized, platforms can start doing any |
| 19 | * needed request_irq( )s |
| 20 | */ |
| 21 | void __init init_IRQ(void) |
| 22 | { |
| 23 | /* |
| 24 | * process the entire interrupt tree in one go |
| 25 | * Any external intc will be setup provided DT chains them |
| 26 | * properly |
| 27 | */ |
| 28 | irqchip_init(); |
| 29 | |
| 30 | #ifdef CONFIG_SMP |
| 31 | /* a SMP H/w block could do IPI IRQ request here */ |
| 32 | if (plat_smp_ops.init_per_cpu) |
| 33 | plat_smp_ops.init_per_cpu(smp_processor_id()); |
| 34 | #endif |
| 35 | |
| 36 | if (machine_desc->init_per_cpu) |
| 37 | machine_desc->init_per_cpu(smp_processor_id()); |
| 38 | } |
| 39 | |
| 40 | /* |
| 41 | * "C" Entry point for any ARC ISR, called from low level vector handler |
| 42 | * @irq is the vector number read from ICAUSE reg of on-chip intc |
| 43 | */ |
| 44 | void arch_do_IRQ(unsigned int hwirq, struct pt_regs *regs) |
| 45 | { |
| 46 | handle_domain_irq(NULL, hwirq, regs); |
| 47 | } |