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, 105 insertions, 0 deletions

diff --git a/kernel/drivers/ide/rapide.c b/kernel/drivers/ide/rapide.c
new file mode 100644
index 000000000..d73c3d100
--- /dev/null
+++ b/kernel/drivers/ide/rapide.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 1996-2002 Russell King.
+ */
+
+#include <linux/module.h>
+#include <linux/blkdev.h>
+#include <linux/errno.h>
+#include <linux/ide.h>
+#include <linux/init.h>
+
+#include <asm/ecard.h>
+
+static const struct ide_port_info rapide_port_info = {
+	.host_flags		= IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
+	.chipset		= ide_generic,
+};
+
+static void rapide_setup_ports(struct ide_hw *hw, void __iomem *base,
+			       void __iomem *ctrl, unsigned int sz, int irq)
+{
+	unsigned long port = (unsigned long)base;
+	int i;
+
+	for (i = 0; i <= 7; i++) {
+		hw->io_ports_array[i] = port;
+		port += sz;
+	}
+	hw->io_ports.ctl_addr = (unsigned long)ctrl;
+	hw->irq = irq;
+}
+
+static int rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
+{
+	void __iomem *base;
+	struct ide_host *host;
+	int ret;
+	struct ide_hw hw, *hws[] = { &hw };
+
+	ret = ecard_request_resources(ec);
+	if (ret)
+		goto out;
+
+	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
+	if (!base) {
+		ret = -ENOMEM;
+		goto release;
+	}
+
+	memset(&hw, 0, sizeof(hw));
+	rapide_setup_ports(&hw, base, base + 0x818, 1 << 6, ec->irq);
+	hw.dev = &ec->dev;
+
+	ret = ide_host_add(&rapide_port_info, hws, 1, &host);
+	if (ret)
+		goto release;
+
+	ecard_set_drvdata(ec, host);
+	goto out;
+
+ release:
+	ecard_release_resources(ec);
+ out:
+	return ret;
+}
+
+static void rapide_remove(struct expansion_card *ec)
+{
+	struct ide_host *host = ecard_get_drvdata(ec);
+
+	ecard_set_drvdata(ec, NULL);
+
+	ide_host_remove(host);
+
+	ecard_release_resources(ec);
+}
+
+static struct ecard_id rapide_ids[] = {
+	{ MANU_YELLOWSTONE, PROD_YELLOWSTONE_RAPIDE32 },
+	{ 0xffff, 0xffff }
+};
+
+static struct ecard_driver rapide_driver = {
+	.probe		= rapide_probe,
+	.remove		= rapide_remove,
+	.id_table	= rapide_ids,
+	.drv = {
+		.name	= "rapide",
+	},
+};
+
+static int __init rapide_init(void)
+{
+	return ecard_register_driver(&rapide_driver);
+}
+
+static void __exit rapide_exit(void)
+{
+	ecard_remove_driver(&rapide_driver);
+}
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Yellowstone RAPIDE driver");
+
+module_init(rapide_init);
+module_exit(rapide_exit);