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, 53 insertions, 0 deletions

diff --git a/kernel/arch/alpha/include/asm/dma-mapping.h b/kernel/arch/alpha/include/asm/dma-mapping.h
new file mode 100644
index 000000000..dfa32f061
--- /dev/null
+++ b/kernel/arch/alpha/include/asm/dma-mapping.h
@@ -0,0 +1,53 @@
+#ifndef _ALPHA_DMA_MAPPING_H
+#define _ALPHA_DMA_MAPPING_H
+
+#include <linux/dma-attrs.h>
+
+extern struct dma_map_ops *dma_ops;
+
+static inline struct dma_map_ops *get_dma_ops(struct device *dev)
+{
+	return dma_ops;
+}
+
+#include <asm-generic/dma-mapping-common.h>
+
+#define dma_alloc_coherent(d,s,h,f)	dma_alloc_attrs(d,s,h,f,NULL)
+
+static inline void *dma_alloc_attrs(struct device *dev, size_t size,
+				    dma_addr_t *dma_handle, gfp_t gfp,
+				    struct dma_attrs *attrs)
+{
+	return get_dma_ops(dev)->alloc(dev, size, dma_handle, gfp, attrs);
+}
+
+#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
+
+static inline void dma_free_attrs(struct device *dev, size_t size,
+				  void *vaddr, dma_addr_t dma_handle,
+				  struct dma_attrs *attrs)
+{
+	get_dma_ops(dev)->free(dev, size, vaddr, dma_handle, attrs);
+}
+
+static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+	return get_dma_ops(dev)->mapping_error(dev, dma_addr);
+}
+
+static inline int dma_supported(struct device *dev, u64 mask)
+{
+	return get_dma_ops(dev)->dma_supported(dev, mask);
+}
+
+static inline int dma_set_mask(struct device *dev, u64 mask)
+{
+	return get_dma_ops(dev)->set_dma_mask(dev, mask);
+}
+
+#define dma_alloc_noncoherent(d, s, h, f)	dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h)	dma_free_coherent(d, s, v, h)
+
+#define dma_cache_sync(dev, va, size, dir)		  ((void)0)
+
+#endif	/* _ALPHA_DMA_MAPPING_H */