1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * OpenRISC irq.c 4 * 5 * Linux architectural port borrowing liberally from similar works of 6 * others. All original copyrights apply as per the original source 7 * declaration. 8 * 9 * Modifications for the OpenRISC architecture: 10 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> 11 */ 12 13 #include <linux/interrupt.h> 14 #include <linux/init.h> 15 #include <linux/ftrace.h> 16 #include <linux/irq.h> 17 #include <linux/irqchip.h> 18 #include <linux/export.h> 19 #include <linux/irqflags.h> 20 21 /* read interrupt enabled status */ 22 unsigned long arch_local_save_flags(void) 23 { 24 return mfspr(SPR_SR) & (SPR_SR_IEE|SPR_SR_TEE); 25 } 26 EXPORT_SYMBOL(arch_local_save_flags); 27 28 /* set interrupt enabled status */ 29 void arch_local_irq_restore(unsigned long flags) 30 { 31 mtspr(SPR_SR, ((mfspr(SPR_SR) & ~(SPR_SR_IEE|SPR_SR_TEE)) | flags)); 32 } 33 EXPORT_SYMBOL(arch_local_irq_restore); 34 35 void __init init_IRQ(void) 36 { 37 irqchip_init(); 38 } 39 40 void __irq_entry do_IRQ(struct pt_regs *regs) 41 { 42 handle_arch_irq(regs); 43 } 44