This patch mainly setup hca for RoCE. it will do a series of
initial works as follows:
      1. init uar table, allocate uar resource
      2. init pd table
      3. init cq table
      4. init mr table
      5. init qp table

Signed-off-by: Lijun Ou <redacted>
Signed-off-by: Wei Hu(Xavier) <redacted>
---
 drivers/infiniband/hw/hns/hns_roce_alloc.c  | 104 ++++++++++++++++
 drivers/infiniband/hw/hns/hns_roce_cq.c     |  25 ++++
 drivers/infiniband/hw/hns/hns_roce_device.h |  69 ++++++++++
 drivers/infiniband/hw/hns/hns_roce_eq.c     |   1 -
 drivers/infiniband/hw/hns/hns_roce_icm.c    |  88 +++++++++++++
 drivers/infiniband/hw/hns/hns_roce_icm.h    |   9 ++
 drivers/infiniband/hw/hns/hns_roce_main.c   |  79 ++++++++++++
 drivers/infiniband/hw/hns/hns_roce_mr.c     | 187 ++++++++++++++++++++++++++++
 drivers/infiniband/hw/hns/hns_roce_pd.c     |  65 ++++++++++
 drivers/infiniband/hw/hns/hns_roce_qp.c     |  30 +++++
 10 files changed, 656 insertions(+), 1 deletion(-)
 create mode 100644 drivers/infiniband/hw/hns/hns_roce_alloc.c
 create mode 100644 drivers/infiniband/hw/hns/hns_roce_mr.c
 create mode 100644 drivers/infiniband/hw/hns/hns_roce_pd.c

diff --git a/drivers/infiniband/hw/hns/hns_roce_alloc.c b/drivers/infiniband/hw/hns/hns_roce_alloc.c
new file mode 100644
index 0000000..0c76f1b
--- /dev/null
+++ b/drivers/infiniband/hw/hns/hns_roce_alloc.c

@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2016 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/bitmap.h>
+#include <linux/dma-mapping.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include "hns_roce_device.h"
+
+int hns_roce_bitmap_alloc(struct hns_roce_bitmap *bitmap, u32 *obj)
+{
+	int ret = 0;
+
+	spin_lock(&bitmap->lock);
+	*obj = find_next_zero_bit(bitmap->table, bitmap->max, bitmap->last);
+	if (*obj >= bitmap->max) {
+		bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top)
+			       & bitmap->mask;
+		*obj = find_first_zero_bit(bitmap->table, bitmap->max);