Linux-libre 4.2-gnu

1 files changed, 53 insertions, 0 deletions

diff --git a/arch/mips/loongson64/common/bonito-irq.c b/arch/mips/loongson64/common/bonito-irq.c
new file mode 100644
index 000000000..4e116d23b
--- /dev/null
+++ b/arch/mips/loongson64/common/bonito-irq.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
+ *
+ * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ *  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/compiler.h>
+
+#include <loongson.h>
+
+static inline void bonito_irq_enable(struct irq_data *d)
+{
+	LOONGSON_INTENSET = (1 << (d->irq - LOONGSON_IRQ_BASE));
+	mmiowb();
+}
+
+static inline void bonito_irq_disable(struct irq_data *d)
+{
+	LOONGSON_INTENCLR = (1 << (d->irq - LOONGSON_IRQ_BASE));
+	mmiowb();
+}
+
+static struct irq_chip bonito_irq_type = {
+	.name		= "bonito_irq",
+	.irq_mask	= bonito_irq_disable,
+	.irq_unmask	= bonito_irq_enable,
+};
+
+static struct irqaction __maybe_unused dma_timeout_irqaction = {
+	.handler	= no_action,
+	.name		= "dma_timeout",
+};
+
+void bonito_irq_init(void)
+{
+	u32 i;
+
+	for (i = LOONGSON_IRQ_BASE; i < LOONGSON_IRQ_BASE + 32; i++)
+		irq_set_chip_and_handler(i, &bonito_irq_type,
+					 handle_level_irq);
+
+#ifdef CONFIG_CPU_LOONGSON2E
+	setup_irq(LOONGSON_IRQ_BASE + 10, &dma_timeout_irqaction);
+#endif
+}