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, 50 insertions, 0 deletions

diff --git a/kernel/arch/mips/sni/eisa.c b/kernel/arch/mips/sni/eisa.c
new file mode 100644
index 000000000..179b5d556
--- /dev/null
+++ b/kernel/arch/mips/sni/eisa.c
@@ -0,0 +1,50 @@
+/*
+ * Virtual EISA root driver.
+ * Acts as a placeholder if we don't have a proper EISA bridge.
+ *
+ * (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org>
+ * modified for SNI usage by Thomas Bogendoerfer
+ *
+ * This code is released under the GPL version 2.
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/eisa.h>
+#include <linux/init.h>
+
+/* The default EISA device parent (virtual root device).
+ * Now use a platform device, since that's the obvious choice. */
+
+static struct platform_device eisa_root_dev = {
+	.name = "eisa",
+	.id   = 0,
+};
+
+static struct eisa_root_device eisa_bus_root = {
+	.dev	       = &eisa_root_dev.dev,
+	.bus_base_addr = 0,
+	.res	       = &ioport_resource,
+	.slots	       = EISA_MAX_SLOTS,
+	.dma_mask      = 0xffffffff,
+	.force_probe   = 1,
+};
+
+int __init sni_eisa_root_init(void)
+{
+	int r;
+
+	r = platform_device_register(&eisa_root_dev);
+	if (!r)
+		return r;
+
+	dev_set_drvdata(&eisa_root_dev.dev, &eisa_bus_root);
+
+	if (eisa_root_register(&eisa_bus_root)) {
+		/* A real bridge may have been registered before
+		 * us. So quietly unregister. */
+		platform_device_unregister(&eisa_root_dev);
+		return -1;
+	}
+	return 0;
+}