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-rw-r--r--arch/microblaze/kernel/irq.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
new file mode 100644
index 000000000..11e24de91
--- /dev/null
+++ b/arch/microblaze/kernel/irq.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2007-2009 PetaLogix
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/ftrace.h>
+#include <linux/kernel.h>
+#include <linux/hardirq.h>
+#include <linux/interrupt.h>
+#include <linux/irqflags.h>
+#include <linux/seq_file.h>
+#include <linux/kernel_stat.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/of_irq.h>
+
+static u32 concurrent_irq;
+
+void __irq_entry do_IRQ(struct pt_regs *regs)
+{
+ unsigned int irq;
+ struct pt_regs *old_regs = set_irq_regs(regs);
+ trace_hardirqs_off();
+
+ irq_enter();
+ irq = get_irq();
+next_irq:
+ BUG_ON(!irq);
+ generic_handle_irq(irq);
+
+ irq = get_irq();
+ if (irq != -1U) {
+ pr_debug("next irq: %d\n", irq);
+ ++concurrent_irq;
+ goto next_irq;
+ }
+
+ irq_exit();
+ set_irq_regs(old_regs);
+ trace_hardirqs_on();
+}
+
+void __init init_IRQ(void)
+{
+ /* process the entire interrupt tree in one go */
+ irqchip_init();
+}