Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 67 insertions, 0 deletions

diff --git a/kernel/arch/sh/boards/mach-highlander/irq-r7780rp.c b/kernel/arch/sh/boards/mach-highlander/irq-r7780rp.c
new file mode 100644
index 000000000..0805b2151
--- /dev/null
+++ b/kernel/arch/sh/boards/mach-highlander/irq-r7780rp.c
@@ -0,0 +1,67 @@
+/*
+ * Renesas Solutions Highlander R7780RP-1 Support.
+ *
+ * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
+ * Copyright (C) 2006  Paul Mundt
+ * Copyright (C) 2008  Magnus Damm
+ *
+ * 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/irq.h>
+#include <linux/io.h>
+#include <mach/highlander.h>
+
+enum {
+	UNUSED = 0,
+
+	/* board specific interrupt sources */
+
+	AX88796,          /* Ethernet controller */
+	PSW,              /* Push Switch */
+	CF,               /* Compact Flash */
+
+	PCI_A,
+	PCI_B,
+	PCI_C,
+	PCI_D,
+};
+
+static struct intc_vect vectors[] __initdata = {
+	INTC_IRQ(PCI_A, 65), /* dirty: overwrite cpu vectors for pci */
+	INTC_IRQ(PCI_B, 66),
+	INTC_IRQ(PCI_C, 67),
+	INTC_IRQ(PCI_D, 68),
+	INTC_IRQ(CF, IRQ_CF),
+	INTC_IRQ(PSW, IRQ_PSW),
+	INTC_IRQ(AX88796, IRQ_AX88796),
+};
+
+static struct intc_mask_reg mask_registers[] __initdata = {
+	{ 0xa5000000, 0, 16, /* IRLMSK */
+	  { PCI_A, PCI_B, PCI_C, PCI_D, CF, 0, 0, 0,
+	    0, 0, 0, 0, 0, 0, PSW, AX88796 } },
+};
+
+static unsigned char irl2irq[HL_NR_IRL] __initdata = {
+	65, 66, 67, 68,
+	IRQ_CF, 0, 0, 0,
+	0, 0, 0, 0,
+	IRQ_AX88796, IRQ_PSW
+};
+
+static DECLARE_INTC_DESC(intc_desc, "r7780rp", vectors,
+			 NULL, mask_registers, NULL, NULL);
+
+unsigned char * __init highlander_plat_irq_setup(void)
+{
+	if (__raw_readw(0xa5000600)) {
+		printk(KERN_INFO "Using r7780rp interrupt controller.\n");
+		register_intc_controller(&intc_desc);
+		return irl2irq;
+	}
+
+	return NULL;
+}