LXR linux/arch/openrisc/kernel/irq.c

   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 */
  22unsigned long arch_local_save_flags(void)
  23{
  24        return mfspr(SPR_SR) & (SPR_SR_IEE|SPR_SR_TEE);
  25}
  26EXPORT_SYMBOL(arch_local_save_flags);
  27
  28/* set interrupt enabled status */
  29void arch_local_irq_restore(unsigned long flags)
  30{
  31        mtspr(SPR_SR, ((mfspr(SPR_SR) & ~(SPR_SR_IEE|SPR_SR_TEE)) | flags));
  32}
  33EXPORT_SYMBOL(arch_local_irq_restore);
  34
  35void __init init_IRQ(void)
  36{
  37        irqchip_init();
  38}
  39
  40void __irq_entry do_IRQ(struct pt_regs *regs)
  41{
  42        handle_arch_irq(regs);
  43}
  44