MIPS: Loongson: Split common loongson source code out

To share common loongson source code between all of the loongson-based
machines. there is a need to split it out of the fuloong-2e/ directory.
at the same time, other according tuning is needed. the machine-specific
parts are defined as macros in relative header file, pci.h, mem.h,
machine.h.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/arch/mips/loongson/common/bonito-irq.c b/arch/mips/loongson/common/bonito-irq.c
new file mode 100644
index 000000000000..3e31e7ad713e
--- /dev/null
+++ b/arch/mips/loongson/common/bonito-irq.c
@@ -0,0 +1,51 @@
+/*
+ * 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. & Insititute 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 <loongson.h>
+
+static inline void bonito_irq_enable(unsigned int irq)
+{
+        BONITO_INTENSET = (1 << (irq - BONITO_IRQ_BASE));
+        mmiowb();
+}
+
+static inline void bonito_irq_disable(unsigned int irq)
+{
+        BONITO_INTENCLR = (1 << (irq - BONITO_IRQ_BASE));
+        mmiowb();
+}
+
+static struct irq_chip bonito_irq_type = {
+        .name   = "bonito_irq",
+        .ack    = bonito_irq_disable,
+        .mask   = bonito_irq_disable,
+        .mask_ack = bonito_irq_disable,
+        .unmask = bonito_irq_enable,
+};
+
+static struct irqaction dma_timeout_irqaction = {
+        .handler        = no_action,
+        .name           = "dma_timeout",
+};
+
+void bonito_irq_init(void)
+{
+        u32 i;
+
+        for (i = BONITO_IRQ_BASE; i < BONITO_IRQ_BASE + 32; i++)
+                set_irq_chip_and_handler(i, &bonito_irq_type, handle_level_irq);
+
+        setup_irq(BONITO_IRQ_BASE + 10, &dma_timeout_irqaction);
+}