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, 57 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-footbridge/dma.c b/kernel/arch/arm/mach-footbridge/dma.c
new file mode 100644
index 000000000..e2e0df8bc
--- /dev/null
+++ b/kernel/arch/arm/mach-footbridge/dma.c
@@ -0,0 +1,57 @@
+/*
+ *  linux/arch/arm/kernel/dma-ebsa285.c
+ *
+ *  Copyright (C) 1998 Phil Blundell
+ *
+ * DMA functions specific to EBSA-285/CATS architectures
+ *
+ *  Changelog:
+ *   09-Nov-1998 RMK	Split out ISA DMA functions to dma-isa.c
+ *   17-Mar-1999 RMK	Allow any EBSA285-like architecture to have
+ *			ISA DMA controllers.
+ */
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/spinlock.h>
+
+#include <asm/dma.h>
+#include <asm/scatterlist.h>
+
+#include <asm/mach/dma.h>
+#include <asm/hardware/dec21285.h>
+
+#if 0
+static int fb_dma_request(unsigned int chan, dma_t *dma)
+{
+	return -EINVAL;
+}
+
+static void fb_dma_enable(unsigned int chan, dma_t *dma)
+{
+}
+
+static void fb_dma_disable(unsigned int chan, dma_t *dma)
+{
+}
+
+static struct dma_ops fb_dma_ops = {
+	.type		= "fb",
+	.request	= fb_dma_request,
+	.enable		= fb_dma_enable,
+	.disable	= fb_dma_disable,
+};
+#endif
+
+static int __init fb_dma_init(void)
+{
+#if 0
+	dma[_DC21285_DMA(0)].d_ops = &fb_dma_ops;
+	dma[_DC21285_DMA(1)].d_ops = &fb_dma_ops;
+#endif
+#ifdef CONFIG_ISA_DMA
+	if (footbridge_cfn_mode())
+		isa_init_dma();
+#endif
+	return 0;
+}
+core_initcall(fb_dma_init);