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>

3 files changed, 232 insertions, 0 deletions

diff --git a/kernel/arch/mips/include/asm/mach-jazz/dma-coherence.h b/kernel/arch/mips/include/asm/mach-jazz/dma-coherence.h
new file mode 100644
index 000000000..dc347c25c
--- /dev/null
+++ b/kernel/arch/mips/include/asm/mach-jazz/dma-coherence.h
@@ -0,0 +1,60 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 2006  Ralf Baechle <ralf@linux-mips.org>
+ */
+#ifndef __ASM_MACH_JAZZ_DMA_COHERENCE_H
+#define __ASM_MACH_JAZZ_DMA_COHERENCE_H
+
+#include <asm/jazzdma.h>
+
+struct device;
+
+static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
+{
+	return vdma_alloc(virt_to_phys(addr), size);
+}
+
+static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
+	struct page *page)
+{
+	return vdma_alloc(page_to_phys(page), PAGE_SIZE);
+}
+
+static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
+	dma_addr_t dma_addr)
+{
+	return vdma_log2phys(dma_addr);
+}
+
+static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr,
+	size_t size, enum dma_data_direction direction)
+{
+	vdma_free(dma_addr);
+}
+
+static inline int plat_dma_supported(struct device *dev, u64 mask)
+{
+	/*
+	 * we fall back to GFP_DMA when the mask isn't all 1s,
+	 * so we can't guarantee allocations that must be
+	 * within a tighter range than GFP_DMA..
+	 */
+	if (mask < DMA_BIT_MASK(24))
+		return 0;
+
+	return 1;
+}
+
+static inline void plat_post_dma_flush(struct device *dev)
+{
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+	return 0;
+}
+
+#endif /* __ASM_MACH_JAZZ_DMA_COHERENCE_H */
diff --git a/kernel/arch/mips/include/asm/mach-jazz/floppy.h b/kernel/arch/mips/include/asm/mach-jazz/floppy.h
new file mode 100644
index 000000000..4b86c88a0
--- /dev/null
+++ b/kernel/arch/mips/include/asm/mach-jazz/floppy.h
@@ -0,0 +1,134 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 1998, 2003 by Ralf Baechle
+ */
+#ifndef __ASM_MACH_JAZZ_FLOPPY_H
+#define __ASM_MACH_JAZZ_FLOPPY_H
+
+#include <linux/delay.h>
+#include <linux/linkage.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <asm/addrspace.h>
+#include <asm/jazz.h>
+#include <asm/jazzdma.h>
+#include <asm/pgtable.h>
+
+static inline unsigned char fd_inb(unsigned int port)
+{
+	unsigned char c;
+
+	c = *(volatile unsigned char *) port;
+	udelay(1);
+
+	return c;
+}
+
+static inline void fd_outb(unsigned char value, unsigned int port)
+{
+	*(volatile unsigned char *) port = value;
+}
+
+/*
+ * How to access the floppy DMA functions.
+ */
+static inline void fd_enable_dma(void)
+{
+	vdma_enable(JAZZ_FLOPPY_DMA);
+}
+
+static inline void fd_disable_dma(void)
+{
+	vdma_disable(JAZZ_FLOPPY_DMA);
+}
+
+static inline int fd_request_dma(void)
+{
+	return 0;
+}
+
+static inline void fd_free_dma(void)
+{
+}
+
+static inline void fd_clear_dma_ff(void)
+{
+}
+
+static inline void fd_set_dma_mode(char mode)
+{
+	vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
+}
+
+static inline void fd_set_dma_addr(char *a)
+{
+	vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
+}
+
+static inline void fd_set_dma_count(unsigned int count)
+{
+	vdma_set_count(JAZZ_FLOPPY_DMA, count);
+}
+
+static inline int fd_get_dma_residue(void)
+{
+	return vdma_get_residue(JAZZ_FLOPPY_DMA);
+}
+
+static inline void fd_enable_irq(void)
+{
+}
+
+static inline void fd_disable_irq(void)
+{
+}
+
+static inline int fd_request_irq(void)
+{
+	return request_irq(FLOPPY_IRQ, floppy_interrupt,
+			   0, "floppy", NULL);
+}
+
+static inline void fd_free_irq(void)
+{
+	free_irq(FLOPPY_IRQ, NULL);
+}
+
+static inline unsigned long fd_getfdaddr1(void)
+{
+	return JAZZ_FDC_BASE;
+}
+
+static inline unsigned long fd_dma_mem_alloc(unsigned long size)
+{
+	unsigned long mem;
+
+	mem = __get_dma_pages(GFP_KERNEL, get_order(size));
+	if(!mem)
+		return 0;
+	vdma_alloc(CPHYSADDR(mem), size);	/* XXX error checking */
+
+	return mem;
+}
+
+static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
+{
+	vdma_free(vdma_phys2log(CPHYSADDR(addr)));
+	free_pages(addr, get_order(size));
+}
+
+static inline unsigned long fd_drive_type(unsigned long n)
+{
+	/* XXX This is wrong for machines with ED 2.88mb disk drives like the
+	   Olivetti M700.  Anyway, we should suck this from the ARC
+	   firmware.  */
+	if (n == 0)
+		return 4;	/* 3,5", 1.44mb */
+
+	return 0;
+}
+
+#endif /* __ASM_MACH_JAZZ_FLOPPY_H */
diff --git a/kernel/arch/mips/include/asm/mach-jazz/mc146818rtc.h b/kernel/arch/mips/include/asm/mach-jazz/mc146818rtc.h
new file mode 100644
index 000000000..987f727af
--- /dev/null
+++ b/kernel/arch/mips/include/asm/mach-jazz/mc146818rtc.h
@@ -0,0 +1,38 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 1998, 2001, 03 by Ralf Baechle
+ * Copyright (C) 2007 Thomas Bogendoerfer
+ *
+ * RTC routines for Jazz style attached Dallas chip.
+ */
+#ifndef __ASM_MACH_JAZZ_MC146818RTC_H
+#define __ASM_MACH_JAZZ_MC146818RTC_H
+
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/jazz.h>
+
+#define RTC_PORT(x)	(0x70 + (x))
+#define RTC_IRQ		8
+
+static inline unsigned char CMOS_READ(unsigned long addr)
+{
+	outb_p(addr, RTC_PORT(0));
+	return *(volatile char *)JAZZ_RTC_BASE;
+}
+
+static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
+{
+	outb_p(addr, RTC_PORT(0));
+	*(volatile char *)JAZZ_RTC_BASE = data;
+}
+
+#define RTC_ALWAYS_BCD	0
+
+#define mc146818_decode_year(year) ((year) + 1980)
+
+#endif /* __ASM_MACH_JAZZ_MC146818RTC_H */