Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / ethernet / mellanox / mlx5 / core / pd.c

diff --git a/kernel/drivers/net/ethernet/mellanox/mlx5/core/pd.c b/kernel/drivers/net/ethernet/mellanox/mlx5/core/pd.c
new file mode 100644 (file)
index 0000000..f2d3aee
--- /dev/null
+++ b/kernel/drivers/net/ethernet/mellanox/mlx5/core/pd.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2013-2015, 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/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+struct mlx5_alloc_pd_mbox_in {
+       struct mlx5_inbox_hdr   hdr;
+       u8                      rsvd[8];
+};
+
+struct mlx5_alloc_pd_mbox_out {
+       struct mlx5_outbox_hdr  hdr;
+       __be32                  pdn;
+       u8                      rsvd[4];
+};
+
+struct mlx5_dealloc_pd_mbox_in {
+       struct mlx5_inbox_hdr   hdr;
+       __be32                  pdn;
+       u8                      rsvd[4];
+};
+
+struct mlx5_dealloc_pd_mbox_out {
+       struct mlx5_outbox_hdr  hdr;
+       u8                      rsvd[8];
+};
+
+int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn)
+{
+       struct mlx5_alloc_pd_mbox_in    in;
+       struct mlx5_alloc_pd_mbox_out   out;
+       int err;
+
+       memset(&in, 0, sizeof(in));
+       memset(&out, 0, sizeof(out));
+       in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ALLOC_PD);
+       err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+       if (err)
+               return err;
+
+       if (out.hdr.status)
+               return mlx5_cmd_status_to_err(&out.hdr);
+
+       *pdn = be32_to_cpu(out.pdn) & 0xffffff;
+       return err;
+}
+EXPORT_SYMBOL(mlx5_core_alloc_pd);
+
+int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn)
+{
+       struct mlx5_dealloc_pd_mbox_in  in;
+       struct mlx5_dealloc_pd_mbox_out out;
+       int err;
+
+       memset(&in, 0, sizeof(in));
+       memset(&out, 0, sizeof(out));
+       in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DEALLOC_PD);
+       in.pdn = cpu_to_be32(pdn);
+       err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+       if (err)
+               return err;
+
+       if (out.hdr.status)
+               return mlx5_cmd_status_to_err(&out.hdr);
+
+       return err;
+}
+EXPORT_SYMBOL(mlx5_core_dealloc_pd);