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path: root/drivers/net/ethernet/mellanox/mlx5/core/mr.c
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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/mr.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/mr.c136
1 files changed, 136 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mr.c b/drivers/net/ethernet/mellanox/mlx5/core/mr.c
new file mode 100644
index 000000000000..5b44e2e46daf
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mr.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. 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"
+
+int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ struct mlx5_create_mkey_mbox_in *in, int inlen)
+{
+ struct mlx5_create_mkey_mbox_out out;
+ int err;
+ u8 key;
+
+ memset(&out, 0, sizeof(out));
+ spin_lock(&dev->priv.mkey_lock);
+ key = dev->priv.mkey_key++;
+ spin_unlock(&dev->priv.mkey_lock);
+ in->seg.qpn_mkey7_0 |= cpu_to_be32(key);
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err) {
+ mlx5_core_dbg(dev, "cmd exec faile %d\n", err);
+ return err;
+ }
+
+ if (out.hdr.status) {
+ mlx5_core_dbg(dev, "status %d\n", out.hdr.status);
+ return mlx5_cmd_status_to_err(&out.hdr);
+ }
+
+ mr->key = mlx5_idx_to_mkey(be32_to_cpu(out.mkey) & 0xffffff) | key;
+ mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n", be32_to_cpu(out.mkey), key, mr->key);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_create_mkey);
+
+int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
+{
+ struct mlx5_destroy_mkey_mbox_in in;
+ struct mlx5_destroy_mkey_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_MKEY);
+ in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
+ 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_destroy_mkey);
+
+int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ struct mlx5_query_mkey_mbox_out *out, int outlen)
+{
+ struct mlx5_destroy_mkey_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, outlen);
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY);
+ in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ return mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_query_mkey);
+
+int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ u32 *mkey)
+{
+ struct mlx5_query_special_ctxs_mbox_in in;
+ struct mlx5_query_special_ctxs_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
+ 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);
+
+ *mkey = be32_to_cpu(out.dump_fill_mkey);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);