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, 81 insertions, 0 deletions

diff --git a/kernel/drivers/infiniband/hw/mthca/mthca_pd.c b/kernel/drivers/infiniband/hw/mthca/mthca_pd.c
new file mode 100644
index 000000000..266f14e47
--- /dev/null
+++ b/kernel/drivers/infiniband/hw/mthca/mthca_pd.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/errno.h>
+
+#include "mthca_dev.h"
+
+int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd)
+{
+	int err = 0;
+
+	pd->privileged = privileged;
+
+	atomic_set(&pd->sqp_count, 0);
+	pd->pd_num = mthca_alloc(&dev->pd_table.alloc);
+	if (pd->pd_num == -1)
+		return -ENOMEM;
+
+	if (privileged) {
+		err = mthca_mr_alloc_notrans(dev, pd->pd_num,
+					     MTHCA_MPT_FLAG_LOCAL_READ |
+					     MTHCA_MPT_FLAG_LOCAL_WRITE,
+					     &pd->ntmr);
+		if (err)
+			mthca_free(&dev->pd_table.alloc, pd->pd_num);
+	}
+
+	return err;
+}
+
+void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd)
+{
+	if (pd->privileged)
+		mthca_free_mr(dev, &pd->ntmr);
+	mthca_free(&dev->pd_table.alloc, pd->pd_num);
+}
+
+int mthca_init_pd_table(struct mthca_dev *dev)
+{
+	return mthca_alloc_init(&dev->pd_table.alloc,
+				dev->limits.num_pds,
+				(1 << 24) - 1,
+				dev->limits.reserved_pds);
+}
+
+void mthca_cleanup_pd_table(struct mthca_dev *dev)
+{
+	/* XXX check if any PDs are still allocated? */
+	mthca_alloc_cleanup(&dev->pd_table.alloc);
+}