Initial import

1 files changed, 54 insertions, 0 deletions

diff --git a/arch/openrisc/kernel/irq.c b/arch/openrisc/kernel/irq.c
new file mode 100644
index 000000000..35e478a93
--- /dev/null
+++ b/arch/openrisc/kernel/irq.c
@@ -0,0 +1,54 @@
+/*
+ * OpenRISC irq.c
+ *
+ * Linux architectural port borrowing liberally from similar works of
+ * others.  All original copyrights apply as per the original source
+ * declaration.
+ *
+ * Modifications for the OpenRISC architecture:
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/ftrace.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/export.h>
+#include <linux/irqflags.h>
+
+/* read interrupt enabled status */
+unsigned long arch_local_save_flags(void)
+{
+	return mfspr(SPR_SR) & (SPR_SR_IEE|SPR_SR_TEE);
+}
+EXPORT_SYMBOL(arch_local_save_flags);
+
+/* set interrupt enabled status */
+void arch_local_irq_restore(unsigned long flags)
+{
+	mtspr(SPR_SR, ((mfspr(SPR_SR) & ~(SPR_SR_IEE|SPR_SR_TEE)) | flags));
+}
+EXPORT_SYMBOL(arch_local_irq_restore);
+
+void __init init_IRQ(void)
+{
+	irqchip_init();
+}
+
+static void (*handle_arch_irq)(struct pt_regs *);
+
+void __init set_handle_irq(void (*handle_irq)(struct pt_regs *))
+{
+	handle_arch_irq = handle_irq;
+}
+
+void __irq_entry do_IRQ(struct pt_regs *regs)
+{
+	handle_arch_irq(regs);
+}