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, 88 insertions, 0 deletions

diff --git a/kernel/arch/mips/pci/pci-lasat.c b/kernel/arch/mips/pci/pci-lasat.c
new file mode 100644
index 000000000..40d2797d2
--- /dev/null
+++ b/kernel/arch/mips/pci/pci-lasat.c
@@ -0,0 +1,88 @@
+/*
+ * 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) 2000, 2001, 04 Keith M Wesolowski
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/types.h>
+
+#include <asm/lasat/lasat.h>
+
+#include <irq.h>
+
+extern struct pci_ops nile4_pci_ops;
+extern struct pci_ops gt64xxx_pci0_ops;
+static struct resource lasat_pci_mem_resource = {
+	.name	= "LASAT PCI MEM",
+	.start	= 0x18000000,
+	.end	= 0x19ffffff,
+	.flags	= IORESOURCE_MEM,
+};
+
+static struct resource lasat_pci_io_resource = {
+	.name	= "LASAT PCI IO",
+	.start	= 0x1a000000,
+	.end	= 0x1bffffff,
+	.flags	= IORESOURCE_IO,
+};
+
+static struct pci_controller lasat_pci_controller = {
+	.mem_resource	= &lasat_pci_mem_resource,
+	.io_resource	= &lasat_pci_io_resource,
+};
+
+static int __init lasat_pci_setup(void)
+{
+	printk(KERN_DEBUG "PCI: starting\n");
+
+	if (IS_LASAT_200())
+		lasat_pci_controller.pci_ops = &nile4_pci_ops;
+	else
+		lasat_pci_controller.pci_ops = &gt64xxx_pci0_ops;
+
+	register_pci_controller(&lasat_pci_controller);
+
+	return 0;
+}
+
+arch_initcall(lasat_pci_setup);
+
+#define LASAT_IRQ_ETH1	 (LASAT_IRQ_BASE + 0)
+#define LASAT_IRQ_ETH0	 (LASAT_IRQ_BASE + 1)
+#define LASAT_IRQ_HDC	 (LASAT_IRQ_BASE + 2)
+#define LASAT_IRQ_COMP	 (LASAT_IRQ_BASE + 3)
+#define LASAT_IRQ_HDLC	 (LASAT_IRQ_BASE + 4)
+#define LASAT_IRQ_PCIA	 (LASAT_IRQ_BASE + 5)
+#define LASAT_IRQ_PCIB	 (LASAT_IRQ_BASE + 6)
+#define LASAT_IRQ_PCIC	 (LASAT_IRQ_BASE + 7)
+#define LASAT_IRQ_PCID	 (LASAT_IRQ_BASE + 8)
+
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	switch (slot) {
+	case 1:
+	case 2:
+	case 3:
+		return LASAT_IRQ_PCIA + (((slot-1) + (pin-1)) % 4);
+	case 4:
+		return LASAT_IRQ_ETH1;	 /* Ethernet 1 (LAN 2) */
+	case 5:
+		return LASAT_IRQ_ETH0;	 /* Ethernet 0 (LAN 1) */
+	case 6:
+		return LASAT_IRQ_HDC;	 /* IDE controller */
+	default:
+		return 0xff;		/* Illegal */
+	}
+
+	return -1;
+}
+
+/* Do platform specific device initialization at pci_enable_device() time */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+	return 0;
+}